in text citations for websites examples

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Apa quick citation guide.

• In-text Citation
• Citing Generative AI
• Citing Web Pages and Social Media
• Citing Articles
• Citing Books
• Citing Business Reports
• Other Formats
• APA Style Quiz

Using In-text Citation

Include an in-text citation when you refer to, summarize, paraphrase, or quote from another source. For every in-text citation in your paper, there must be a corresponding entry in your reference list.

APA in-text citation style uses the author's last name and the year of publication, for example: (Field, 2005). For direct quotations, include the page number as well, for example: (Field, 2005, p. 14). For sources such as websites and e-books that have no page numbers , use a paragraph number, for example: (Field, 2005, para. 1). More information on direct quotation of sources without pagination is given on the APA Style and Grammar Guidelines web page.

Example paragraph with in-text citation

A few researchers in the linguistics field have developed training programs designed to improve native speakers' ability to understand accented speech (Derwing et al., 2002; Thomas, 2004). Their training techniques are based on the research described above indicating that comprehension improves with exposure to non-native speech.   Derwing et al. (2002) conducted their training with students preparing to be social workers, but note that other professionals who work with non-native speakers could benefit from a similar program.

Derwing, T. M., Rossiter, M. J., & Munro, M. J. (2002). Teaching native speakers to listen to foreign-accented speech.  Journal of Multilingual and Multicultural Development , 23 (4), 245-259.

Thomas, H. K. (2004).  Training strategies for improving listeners' comprehension of foreign-accented speech  (Doctoral dissertation). University of Colorado, Boulder.

Citing Web Pages In Text

Cite web pages in text as you would any other source, using the author and date if known. Keep in mind that the author may be an organization rather than a person. For sources with no author, use the title in place of an author.

For sources with no date use n.d. (for no date) in place of the year: (Smith, n.d.). For more information on citations for sources with no date or other missing information see the page on missing reference information on the APA Style and Grammar Guidelines web page. 

Below are examples of using in-text citation with web pages.

Web page with author:

In-text citation

Heavy social media use can be linked to depression and other mental disorders in teens (Asmelash, 2019).

Reference entry

Asmelash, L. (2019, August 14). Social media use may harm teens' mental health by disrupting positive activities, study says . CNN. https://www.cnn.com/2019/08/13/health/social-media-mental-health-trnd/index.html

Web page with organizational author:

More than 300 million people worldwide are affected by depression (World Health Organization, 2018).

World Health Organization. (2018, March 22).  Depression . https://www.who.int/en/news-room/fact-sheets/detail/depression

Web page with no date:

Establishing regular routines, such as exercise, can help survivors of disasters recover from trauma (American Psychological Association [APA], n.d.).

American Psychological Association. (n.d.). Recovering emotionally from disaste r. http://www.apa.org/helpcenter/recovering-disasters.aspx

General Guidelines

In-text references should immediately follow the title, word, or phrase to which they are directly relevant, rather than appearing at the end of long clauses or sentences. In-text references should always precede punctuation marks. Below are examples of using in-text citation.

Author's name in parentheses:

One study found that the most important element in comprehending non-native speech is familiarity with the topic (Gass & Varonis, 1984).

Author's name part of narrative:

Gass and Varonis (1984) found that the most important element in comprehending non-native speech is familiarity with the topic.

Group as author: First citation: (American Psychological Association [APA], 2015) Subsequent citation: (APA, 2015)

Multiple works: (separate each work with semi-colons)

Research shows that listening to a particular accent improves comprehension of accented speech in general (Gass & Varonis, 1984; Krech Thomas, 2004).

Direct quote: (include page number and place quotation marks around the direct quote)

One study found that “the listener's familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (Gass & Varonis, 1984, p. 85).

Gass and Varonis (1984) found that “the listener’s familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (p. 85).

Note:  For direct quotations of more than 40 words , display the quote as an indented block of text without quotation marks and include the authors’ names, year, and page number in parentheses at the end of the quote. For example:

This suggests that familiarity with nonnative speech in general, although it is clearly not as important a variable as topic familiarity, may indeed have some effect. That is, prior experience with nonnative speech, such as that gained by listening to the reading, facilitates comprehension. (Gass & Varonis, 1984, p. 77)

Works by Multiple Authors

APA style has specific rules for citing works by multiple authors. Use the following guidelines to determine how to correctly cite works by multiple authors in text. For more information on citing works by multiple authors see the APA Style and Grammar Guidelines page on in-text citation .

Note: When using multiple authors' names as part of your narrative, rather than in parentheses, always spell out the word and. For multiple authors' names within a parenthetic citation, use &.

One author: (Field, 2005)

Two authors: (Gass & Varonis, 1984)

Three or more authors:   (Tremblay et al., 2010)

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Purdue Online Writing Lab Purdue OWL® College of Liberal Arts

MLA In-Text Citations: The Basics

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MLA (Modern Language Association) style is most commonly used to write papers and cite sources within the liberal arts and humanities. This resource, updated to reflect the MLA Handbook (9 th ed.), offers examples for the general format of MLA research papers, in-text citations, endnotes/footnotes, and the Works Cited page.

Guidelines for referring to the works of others in your text using MLA style are covered throughout the  MLA Handbook  and in chapter 7 of the  MLA Style Manual . Both books provide extensive examples, so it's a good idea to consult them if you want to become even more familiar with MLA guidelines or if you have a particular reference question.

Basic in-text citation rules

In MLA Style, referring to the works of others in your text is done using parenthetical citations . This method involves providing relevant source information in parentheses whenever a sentence uses a quotation or paraphrase. Usually, the simplest way to do this is to put all of the source information in parentheses at the end of the sentence (i.e., just before the period). However, as the examples below will illustrate, there are situations where it makes sense to put the parenthetical elsewhere in the sentence, or even to leave information out.

General Guidelines

• The source information required in a parenthetical citation depends (1) upon the source medium (e.g. print, web, DVD) and (2) upon the source’s entry on the Works Cited page.
• Any source information that you provide in-text must correspond to the source information on the Works Cited page. More specifically, whatever signal word or phrase you provide to your readers in the text must be the first thing that appears on the left-hand margin of the corresponding entry on the Works Cited page.

In-text citations: Author-page style

MLA format follows the author-page method of in-text citation. This means that the author's last name and the page number(s) from which the quotation or paraphrase is taken must appear in the text, and a complete reference should appear on your Works Cited page. The author's name may appear either in the sentence itself or in parentheses following the quotation or paraphrase, but the page number(s) should always appear in the parentheses, not in the text of your sentence. For example:

Both citations in the examples above, (263) and (Wordsworth 263), tell readers that the information in the sentence can be located on page 263 of a work by an author named Wordsworth. If readers want more information about this source, they can turn to the Works Cited page, where, under the name of Wordsworth, they would find the following information:

Wordsworth, William. Lyrical Ballads . Oxford UP, 1967.

In-text citations for print sources with known author

For print sources like books, magazines, scholarly journal articles, and newspapers, provide a signal word or phrase (usually the author’s last name) and a page number. If you provide the signal word/phrase in the sentence, you do not need to include it in the parenthetical citation.

These examples must correspond to an entry that begins with Burke, which will be the first thing that appears on the left-hand margin of an entry on the Works Cited page:

Burke, Kenneth. Language as Symbolic Action: Essays on Life, Literature, and Method . University of California Press, 1966.

In-text citations for print sources by a corporate author

When a source has a corporate author, it is acceptable to use the name of the corporation followed by the page number for the in-text citation. You should also use abbreviations (e.g., nat'l for national) where appropriate, so as to avoid interrupting the flow of reading with overly long parenthetical citations.

In-text citations for sources with non-standard labeling systems

If a source uses a labeling or numbering system other than page numbers, such as a script or poetry, precede the citation with said label. When citing a poem, for instance, the parenthetical would begin with the word “line”, and then the line number or range. For example, the examination of William Blake’s poem “The Tyger” would be cited as such:

The speaker makes an ardent call for the exploration of the connection between the violence of nature and the divinity of creation. “In what distant deeps or skies. / Burnt the fire of thine eyes," they ask in reference to the tiger as they attempt to reconcile their intimidation with their relationship to creationism (lines 5-6).

Longer labels, such as chapters (ch.) and scenes (sc.), should be abbreviated.

In-text citations for print sources with no known author

When a source has no known author, use a shortened title of the work instead of an author name, following these guidelines.

Place the title in quotation marks if it's a short work (such as an article) or italicize it if it's a longer work (e.g. plays, books, television shows, entire Web sites) and provide a page number if it is available.

Titles longer than a standard noun phrase should be shortened into a noun phrase by excluding articles. For example, To the Lighthouse would be shortened to Lighthouse .

If the title cannot be easily shortened into a noun phrase, the title should be cut after the first clause, phrase, or punctuation:

In this example, since the reader does not know the author of the article, an abbreviated title appears in the parenthetical citation, and the full title of the article appears first at the left-hand margin of its respective entry on the Works Cited page. Thus, the writer includes the title in quotation marks as the signal phrase in the parenthetical citation in order to lead the reader directly to the source on the Works Cited page. The Works Cited entry appears as follows:

"The Impact of Global Warming in North America." Global Warming: Early Signs . 1999. www.climatehotmap.org/. Accessed 23 Mar. 2009.

If the title of the work begins with a quotation mark, such as a title that refers to another work, that quote or quoted title can be used as the shortened title. The single quotation marks must be included in the parenthetical, rather than the double quotation.

Parenthetical citations and Works Cited pages, used in conjunction, allow readers to know which sources you consulted in writing your essay, so that they can either verify your interpretation of the sources or use them in their own scholarly work.

Author-page citation for classic and literary works with multiple editions

Page numbers are always required, but additional citation information can help literary scholars, who may have a different edition of a classic work, like Marx and Engels's  The Communist Manifesto . In such cases, give the page number of your edition (making sure the edition is listed in your Works Cited page, of course) followed by a semicolon, and then the appropriate abbreviations for volume (vol.), book (bk.), part (pt.), chapter (ch.), section (sec.), or paragraph (par.). For example:

Author-page citation for works in an anthology, periodical, or collection

When you cite a work that appears inside a larger source (for instance, an article in a periodical or an essay in a collection), cite the author of the  internal source (i.e., the article or essay). For example, to cite Albert Einstein's article "A Brief Outline of the Theory of Relativity," which was published in  Nature  in 1921, you might write something like this:

See also our page on documenting periodicals in the Works Cited .

Citing authors with same last names

Sometimes more information is necessary to identify the source from which a quotation is taken. For instance, if two or more authors have the same last name, provide both authors' first initials (or even the authors' full name if different authors share initials) in your citation. For example:

Citing a work by multiple authors

For a source with two authors, list the authors’ last names in the text or in the parenthetical citation:

Corresponding Works Cited entry:

Best, David, and Sharon Marcus. “Surface Reading: An Introduction.” Representations , vol. 108, no. 1, Fall 2009, pp. 1-21. JSTOR, doi:10.1525/rep.2009.108.1.1

For a source with three or more authors, list only the first author’s last name, and replace the additional names with et al.

Franck, Caroline, et al. “Agricultural Subsidies and the American Obesity Epidemic.” American Journal of Preventative Medicine , vol. 45, no. 3, Sept. 2013, pp. 327-333.

Citing multiple works by the same author

If you cite more than one work by an author, include a shortened title for the particular work from which you are quoting to distinguish it from the others. Put short titles of books in italics and short titles of articles in quotation marks.

Citing two articles by the same author :

Citing two books by the same author :

Additionally, if the author's name is not mentioned in the sentence, format your citation with the author's name followed by a comma, followed by a shortened title of the work, and, when appropriate, the page number(s):

Citing multivolume works

If you cite from different volumes of a multivolume work, always include the volume number followed by a colon. Put a space after the colon, then provide the page number(s). (If you only cite from one volume, provide only the page number in parentheses.)

Citing the Bible

In your first parenthetical citation, you want to make clear which Bible you're using (and underline or italicize the title), as each version varies in its translation, followed by book (do not italicize or underline), chapter, and verse. For example:

If future references employ the same edition of the Bible you’re using, list only the book, chapter, and verse in the parenthetical citation:

John of Patmos echoes this passage when describing his vision (Rev. 4.6-8).

Citing indirect sources

Sometimes you may have to use an indirect source. An indirect source is a source cited within another source. For such indirect quotations, use "qtd. in" to indicate the source you actually consulted. For example:

Note that, in most cases, a responsible researcher will attempt to find the original source, rather than citing an indirect source.

Citing transcripts, plays, or screenplays

Sources that take the form of a dialogue involving two or more participants have special guidelines for their quotation and citation. Each line of dialogue should begin with the speaker's name written in all capitals and indented half an inch. A period follows the name (e.g., JAMES.) . After the period, write the dialogue. Each successive line after the first should receive an additional indentation. When another person begins speaking, start a new line with that person's name indented only half an inch. Repeat this pattern each time the speaker changes. You can include stage directions in the quote if they appear in the original source.

Conclude with a parenthetical that explains where to find the excerpt in the source. Usually, the author and title of the source can be given in a signal phrase before quoting the excerpt, so the concluding parenthetical will often just contain location information like page numbers or act/scene indicators.

Here is an example from O'Neill's  The Iceman Cometh.

WILLIE. (Pleadingly) Give me a drink, Rocky. Harry said it was all right. God, I need a drink.

ROCKY. Den grab it. It's right under your nose.

WILLIE. (Avidly) Thanks. (He takes the bottle with both twitching hands and tilts it to his lips and gulps down the whiskey in big swallows.) (1.1)

Citing non-print or sources from the Internet

With more and more scholarly work published on the Internet, you may have to cite sources you found in digital environments. While many sources on the Internet should not be used for scholarly work (reference the OWL's  Evaluating Sources of Information  resource), some Web sources are perfectly acceptable for research. When creating in-text citations for electronic, film, or Internet sources, remember that your citation must reference the source on your Works Cited page.

Sometimes writers are confused with how to craft parenthetical citations for electronic sources because of the absence of page numbers. However, these sorts of entries often do not require a page number in the parenthetical citation. For electronic and Internet sources, follow the following guidelines:

• Include in the text the first item that appears in the Work Cited entry that corresponds to the citation (e.g. author name, article name, website name, film name).
• Do not provide paragraph numbers or page numbers based on your Web browser’s print preview function.
• Unless you must list the Web site name in the signal phrase in order to get the reader to the appropriate entry, do not include URLs in-text. Only provide partial URLs such as when the name of the site includes, for example, a domain name, like  CNN.com  or  Forbes.com,  as opposed to writing out http://www.cnn.com or http://www.forbes.com.

Miscellaneous non-print sources

Two types of non-print sources you may encounter are films and lectures/presentations:

In the two examples above “Herzog” (a film’s director) and “Yates” (a presentor) lead the reader to the first item in each citation’s respective entry on the Works Cited page:

Herzog, Werner, dir. Fitzcarraldo . Perf. Klaus Kinski. Filmverlag der Autoren, 1982.

Yates, Jane. "Invention in Rhetoric and Composition." Gaps Addressed: Future Work in Rhetoric and Composition, CCCC, Palmer House Hilton, 2002. Address.

Electronic sources

Electronic sources may include web pages and online news or magazine articles:

In the first example (an online magazine article), the writer has chosen not to include the author name in-text; however, two entries from the same author appear in the Works Cited. Thus, the writer includes both the author’s last name and the article title in the parenthetical citation in order to lead the reader to the appropriate entry on the Works Cited page (see below).

In the second example (a web page), a parenthetical citation is not necessary because the page does not list an author, and the title of the article, “MLA Formatting and Style Guide,” is used as a signal phrase within the sentence. If the title of the article was not named in the sentence, an abbreviated version would appear in a parenthetical citation at the end of the sentence. Both corresponding Works Cited entries are as follows:

Taylor, Rumsey. "Fitzcarraldo." Slant , 13 Jun. 2003, www.slantmagazine.com/film/review/fitzcarraldo/. Accessed 29 Sep. 2009. 

"MLA Formatting and Style Guide." The Purdue OWL , 2 Aug. 2016, owl.english.purdue.edu/owl/resource/747/01/. Accessed 2 April 2018.

Multiple citations

To cite multiple sources in the same parenthetical reference, separate the citations by a semi-colon:

Time-based media sources

When creating in-text citations for media that has a runtime, such as a movie or podcast, include the range of hours, minutes and seconds you plan to reference. For example: (00:02:15-00:02:35).

When a citation is not needed

Common sense and ethics should determine your need for documenting sources. You do not need to give sources for familiar proverbs, well-known quotations, or common knowledge (For example, it is expected that U.S. citizens know that George Washington was the first President.). Remember that citing sources is a rhetorical task, and, as such, can vary based on your audience. If you’re writing for an expert audience of a scholarly journal, for example, you may need to deal with expectations of what constitutes “common knowledge” that differ from common norms.

Other Sources

The MLA Handbook describes how to cite many different kinds of authors and content creators. However, you may occasionally encounter a source or author category that the handbook does not describe, making the best way to proceed can be unclear.

In these cases, it's typically acceptable to apply the general principles of MLA citation to the new kind of source in a way that's consistent and sensible. A good way to do this is to simply use the standard MLA directions for a type of source that resembles the source you want to cite.

You may also want to investigate whether a third-party organization has provided directions for how to cite this kind of source. For example, Norquest College provides guidelines for citing Indigenous Elders and Knowledge Keepers⁠ —an author category that does not appear in the MLA Handbook . In cases like this, however, it's a good idea to ask your instructor or supervisor whether using third-party citation guidelines might present problems.

In-Text Citations: An Overview

In-text citations are brief, unobtrusive references that direct readers to the works-cited-list entries for the sources you consulted and, where relevant, to the location in the source being cited.

An in-text citation begins with the shortest piece of information that di­rects your reader to the entry in the works-cited list. Thus, it begins with what ever comes first in the entry: the author’s name or the title (or descrip­tion) of the work. The citation can appear in your prose or in parentheses.

Citation in prose  Naomi Baron broke new ground on the subject. Parenthetical citation At least one researcher has broken new ground on the subject (Baron). Work cited Baron, Naomi S. “Redefining Reading: The Impact of Digital Communication Media.” PMLA , vol. 128, no. 1, Jan. 2013, pp. 193–200. 

When relevant, an in-text citation also has a second component: if a specific part of a work is quoted or paraphrased and the work includes a page number, line number, time stamp, or other way to point readers to the place in the work where the information can be found, that location marker must be included in parentheses.

Parenthetical citation According to Naomi Baron, reading is “just half of literacy. The other half is writing” (194).

The author or title can also appear alongside the page number or other loca­tion marker in parentheses.

Parenthetical citation Reading is “just half of literacy. The other half is writing” (Baron 194).

All in-text references should be concise. Avoid, for instance, providing the author’s name or title of a work in both your prose and parentheses.

Citation (incorrect) According to Naomi Baron, reading is “just half of literacy. The other half is writing” (Baron 194). Citation (correct) According to Naomi Baron, reading is “just half of literacy. The other half is writing” (194).

For more on what to include in an in-text citation and how to style it, see sections 6.3–6.30 of the ninth edition of the MLA Handbook ).

55 Comments

Brandi unruh 10 april 2021 at 11:04 am.

Hello! I am a high school English teacher trying to answer a question that came up during our research unit. I can’t seem to find a definitive answer online. When using a shortened title in an in-text citation, does an ellipsis need to be included? For example, if the title was “The Problem of Poverty in America: A Historical and Cultural Analysis”, would the in-text citation be (“The Problem of Poverty in America...”) or (“The Problem of Poverty in America”)? Thank you for your time and expertise!

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Laura Kiernan 12 April 2021 AT 11:04 AM

No, an ellipsis would not be used in an in-text citation. We provide extensive guidance on shortening titles in 6.10 of the new ninth edition of the MLA Handbook .

angel 10 May 2021 AT 02:05 PM

hii How to write an in text citation of an entry from encyclopedia which has an editor but no separate authors for each entry ?

William Feeler 11 May 2021 AT 01:05 PM

I see no mention of paragraph numbers for unpaginated prose or sections/lines for drama. are these practices gone?

Laura Kiernan 18 May 2021 AT 01:05 PM

This post provides a general overview of our approach to in-text citations. The complete guidelines appear in sections 6.1–6.30 of the ninth edition of the MLA Handbook .

Vonceil Park 11 May 2021 AT 01:05 PM

Dear MLA Staff, A professor at my College demands students to provide paragraph number in the in-text citation for online articles that have no page number nor paragraph number. Do we just count the paragraph number and put them in the parenthesis, for example: (para. 3)?

Laura Kiernan 18 May 2021 AT 12:05 PM

Thank you for your question. Your approach to modifying our style in accordance with your professor's instructions works, but we would suggest confirming that styling with your professor.

Arathi Babu 17 May 2021 AT 08:05 AM

How to write an in text citation of an unsigned entry from a reference work?

Laura Kiernan 08 June 2021 AT 11:06 AM

If the entry was in a print work, the in-text citation would include the entry’s title or a shortened version of the entry’s title and the page number of the quotation. If the entry was in a reference work without page numbers, the in-text citation should just contain the title or shortened title of the entry.

Sethu 17 May 2021 AT 02:05 PM

For example: Can I give an in-text citation like the following: Shakespeare, in his work Hamlet, quotes: "To be or not to be" (7).

For citing commonly studied verse works, see 6.22 in the ninth edition of the MLA Handbook .

Trinity Klein 21 May 2021 AT 11:05 AM

Can you please help with proper in-text citation placement for an embedded quotation? Does the citation come immediately after the quotation or at the very end of the sentence? For example, is this correct: He asks her to take him home “in the voice of a child afraid of the dark” which comes as a shock to Scout because he has so long held a bold and rebellious reputation (372). Or should the (372) come immediately after ...dark"...? Thank you!

For more information about the placement of a parenthetical citations, see 6.43 in the ninth edition of the MLA Handbook .

Karima 30 May 2021 AT 05:05 PM

Dear MLA staff, 1) In case i am quoting from multiple sources by the same author, am i required to introduce again the source i am quoting from in the beginning of my sentence? (Quotes are used in multiple paragraphs)

For guidance on citing multiple sources by the same author, see 6.8 in the ninth edition of the MLA Handbook .

Yves 23 June 2021 AT 06:06 PM

Hello, is there a specific rule about how to format a range of page numbers in the parenthetical citation? For example, could (Eden 44-45) be written as (Eden 44-5), or is only one example correct?

Laura Kiernan 24 September 2021 AT 02:09 PM

For information about styling number ranges, see section 2.139 of the ninth edition of the MLA Handbook .

Faliravo 11 August 2021 AT 05:08 AM

Good morning MLA team, My professor insists that I include the year of publication for in-text citations. Is it going to be okay if I insert the year between the author and the page number?

Thank you very much for your consideration.

Laura Kiernan 24 September 2021 AT 01:09 PM

Your approach to modifying our style in accordance with your professor’s instructions works, but we would suggest confirming that styling with your professor.

Pauline 14 September 2021 AT 11:09 PM

How do I cite an entire work. For example, if I want to say Toni Morrison's the "Bluest Eye" has been used as a textbook for many English literature classes, I suppose I shouldn't put any page number in the parenthetical citation. But I can't find any MLA references on this.

See section 4.14 of the ninth edition of the MLA Handbook .

myron glassenberg 04 February 2022 AT 01:02 PM

if source is the whole book, how do I cite in text and in works cited pages. e.g. freud (no page number) Freud , ( 1892) The Pleasure Principle.

Rita Rozzi 20 September 2023 AT 07:09 PM

There is no section 4.14 in the ninth edition. Do you have any updated information? Thank you.

Laura Kiernan 21 September 2023 AT 03:09 PM

Section 4.14, which is titled "Passing Mentions," can be found in chapter 4 of the ninth edition of the handbook.

Lauren McFall 13 October 2021 AT 02:10 PM

Students often refer to the same source consecutively across more than one sentence. I'm having a hard time finding information about the preferred approach according to the MLA. As a parallel, APA makes a specific recommendation - "cite the source in the first sentence in which it is relevant and do not repeat the citation in subsequent sentences as long as the source remains clear and unchanged" https://apastyle.apa.org/style-grammar-guidelines/citations/appropriate-citation

Laura Kiernan 20 October 2021 AT 04:10 PM

See 6.45 of the ninth edition of the MLA Handbook .

Ruth Schafer 01 December 2022 AT 07:12 PM

6.45 out of the MLA Handbook's ninth edition does not provide an example of how to cite a multi-sentence paraphrase when using an unpaginated source. Can you give an example of how to cite a multi-sentence paraphrase where the source does not have published page numbering?

Should I introduce the source in my prose and then again at the end of the multi-sentence paraphrase in parentheses when I have finished citing the paraphrase? Example: John Smith from Smith Architecture explains that crawl space foundations are...blah blah blah. These foundations are most commonly used in midwestern constructions where the frost line is...blah, blah, blah. Keep writing the paraphrase and then at the end of the final sentence instead of a page citation write the author's last name (Smith). This way if you switch to a different source, at least the reader knows that you have finished with the Smith source and have moved on to your own commentary or another source's information. Usually, I'd use a page citation at the end of the paraphrase, but when dealing with a source that does not have page numbering, I'm unsure what to do.

Lizzie 18 October 2021 AT 10:10 PM

If I only use textual evidence from the novel I'm examining, do I need to include the authors name with each in text citation? There are no other works cited, so it seems redundant/clutter-y to me

Kayden 29 October 2021 AT 05:10 PM

If I'm trying to cite multiple paragraphs from the same source would it be correct to say (par. 3 and 13) or should it be (par. 3, 13) and is it different if they are next to each other too like (par. 6-7) or (par. 6 and 7).

Laura Kiernan 04 November 2021 AT 11:11 AM

See sections 6.18–6.20 of the ninth edition of the MLA Handbook .

Rachel 17 November 2021 AT 01:11 PM

When citing from an online source without pagination, if you include the author's name in the introduction to the quote, do you need to include anything in parentheses like the article title?

Laura Kiernan 22 November 2021 AT 12:11 PM

See section 6.26 of the ninth edition of the MLA Handbook .

July 25 November 2021 AT 05:11 PM

When quoting an online source (e.g. a website), do I have to indicate the fact that it's an online source in the in-text-citations as in (Name [online]) or is the author's name enough?

Thank you in advance for your answer.

Laura Kiernan 29 November 2021 AT 10:11 AM

According to MLA style, an in-text citation for an online work should not note that the work is online.

Pinkie 19 March 2022 AT 08:03 PM

If I'm writing a response paper, and I need to summarize the whole article to introduce it, then should I use in-text citation?

Laura Kiernan 25 March 2022 AT 01:03 PM

For guidance on paraphrasing, see sections 4.5–4.8 of the ninth edition of the MLA Handbook .

Kay 09 April 2022 AT 06:04 PM

Hi, am I supposed to include the DOI when one is available in the citation? If I cite the print version of a journal article that has a DOI, still include the DOI in the citation? Thank you!

Laura Kiernan 11 April 2022 AT 11:04 AM

Thank you for your questions. For guidance on including a DOI in your works-cited-list entry, see sections 5.84 and 5.93 in the ninth edition of the MLA Handbook .

Mike 16 April 2022 AT 05:04 PM

Website in-text Citation...

When I'm writing an in-text citation for a website, I'm seeing all manner of different things to include. Do I need to add the author name and year of publishing for the article?\ Do I just need the website name? I'm not really understanding what I need to add or obtain for such a citation within the text I'm writing.

I'm writing a book on my life, and I'm quoting a particular webpage to show one particular angle of an argument I'm making, and, of course, it's not common knowledge, so I want to make sure that I follow all the rules for this kind of thing, so I don't get in trouble with the author(s) of the sources I have quoted from...

Laura Kiernan 18 April 2022 AT 02:04 PM

Thank you for your questions about MLA style. For guidance on in-text citations for web pages, see section 6.26 of the ninth edition of the MLA Handbook .

Cynthia 21 May 2022 AT 10:05 PM

When you're doing an In-text citations do you put the quotations over the chapter title and then quotations over what you get from the text or do you italicize the title?

Laura Kiernan 25 May 2022 AT 03:05 PM

Thank you for your question. For guidance on how to style chapter titles, see 2.109 of the ninth edition of the MLA Handbook .

Napatsi 15 August 2022 AT 07:08 PM

I'm trying to find how to put in the in-text citation for a UN declaration article but can only find the "Resolutions of International Governing Bodies" on page 446 of the 9th edition but not how to out it in without an author.

Kim 27 September 2022 AT 12:09 PM

I'm quoting a passage from an unpublished manuscript, and it is not the only work I'm citing by the author, but the only one without a year. So using "Smith 1995, 82" is not possible. What would an in-text citation for this case look like?

Jen 17 November 2022 AT 08:11 PM

How do I cite a news cast for in-text citation like ABC News?

Samantha 04 December 2022 AT 05:12 PM

Hi, For MLA format, should a quote where you need to de-capitalize the first letter be written as "you want" or "(y)ou want". Thanks!

Laura Kiernan 07 December 2022 AT 01:12 PM

Thank you for your question. For guidance on how to indicate that you have lowercased the first letter of a quotation, see 6.56 of the ninth edition of the MLA Handbook .

Maria Albeti 07 February 2023 AT 01:02 PM

Stewart, David W. Focus groups. In: Frey, B.B. (ed.) The SAGE Encyclopedia of Educational Research, Measurement, and Evaluation, vol. 2, pp. 687–692. Thousand Oaks: Sage Publications 2018 In this case, how is the correct form to write, because the article is IN the the book?

Eros Karadzhov 15 February 2023 AT 02:02 PM

If we have a sentence that is a statement, but at the end we quote a question, which punctuation mark do we keep, the question mark or the period; maybe both? Example: (1) The author ends his poem with the following question on purpose: "Or does it explode?" (Hughes 11). (2) The author ends his poem with the following question on purpose: "Or does it explode" (Hughes 11)?

Which would be correct, or maybe both are wrong?

Thank you in advance!

Laura Kiernan 16 February 2023 AT 03:02 PM

Thank you for your question. For guidance on quotations ending in a question mark, see section 6.53 of the ninth edition of the MLA Handbook .

Anonymous 08 March 2023 AT 05:03 PM

What about online articles with no known author or multiple authors? What should the in-text citation look like?

Maria 25 March 2023 AT 04:03 PM

Please settle a dispute with my colleagues. I encourage composition students to avoid listing the title of journal articles within the essay unless it is especially relevant because it clutters their arguments. I came to this conclusion from my interpretation of this statement from MLA: "All in-text references should be concise. Avoid, for instance, providing the author’s name or title of a work in both your prose and parentheses." Could someone please provide an answer or further clarification?

Erika Suffern 30 March 2023 AT 04:03 PM

You are right to identify a principle of concision in our guidelines. That said, it is not wrong to mention a title in prose, but it should be done, as you note, when relevant–not as a de rigeur practice or for “filler.” As Eric Hayot notes in The Elements of Academic Style: Writing for the Humanities (Columbia UP, 2014), “giving the title” in prose “suggests fuller forthcoming treatment” (159). Another reason for including the title in prose might be to call attention to something about it. Many writers who do mention a title in prose fear having an incomplete citation and are tempted also to include the title in a parenthetical reference, which is unnecessary.

Jay 29 April 2023 AT 12:04 AM

How do I in-text cite a direct quote from the introduction of an ebook with no page numbers? Would I write (Author "Introduction") or just write (Author)?

Kiara 11 February 2024 AT 03:02 PM

Hello! I am a university student who is currently creating works cited entries and in-text citations for a reflection essay. How do I properly cite professor and peer comments?

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Home / Guides / Citation Guides / MLA Format / MLA In-text Citations

MLA In-Text Citations

An in-text citation is a reference to a source that is found within the text of a paper ( Handbook 227). This tells a reader that an idea, quote, or paraphrase originated from a source. MLA in-text citations usually include the last name of the author and the location of cited information.

This guide focuses on how to create MLA in-text citations, such as citations in prose and parenthetical citations in the current MLA style, which is in its 9th edition. This style was created by the Modern Language Association . This guide reviews MLA guidelines but is not related directly to the association.

Table of Contents

Here’s a quick rundown of the contents of this guide on how to use in-text citations.

Fundamentals

• Why in-text citations are important
• Prose vs parenthetical in-text citation differences
• Parenthetical citation reference chart

In-text citation examples

• In-text citation with two authors
• In-text citation with 3+ authors
• In-text citation with no authors
• In-text citation with corporate authors
• In-text citation with edited books and anthologies
• In-text citation with no page numbers and online sources
• Citing the same sources multiple times
• Citing 2+ sources in the same in-text citation
• Citing multiple works by the same author in the same in-text citation
• Abbreviating titles
• Citing religious works and scriptures
• Citing long or block quotes

Why are in-text citations important?

In-text citations

• Give full credit to sources that are quoted and paraphrased in a work/paper.
• Help the writer avoid plagiarism.
• Are a signal that the information came from another source.
• Tell the reader where the information came from.

In-text citation vs. in-prose vs. parenthetical

An in-text citation is a general citation of where presented information came from. In MLA, an in-text citation can be displayed in two different ways:

• In the prose
• As a parenthetical citation

While the two ways are similar, there are slight differences. However, for both ways, you’ll need to know how to format page numbers in MLA .

Citation in prose

An MLA citation in prose is when the author’s name is used in the text of the sentence. At the end of the sentence, in parentheses, is the page number where the information was found.

Here is an example

When it comes to technology, King states that we “need to be comfortable enough with technology tools and services that we can help point our patrons in the right direction, even if we aren’t intimately familiar with how the device works” (11).

This MLA citation in prose includes King’s name in the sentence itself, and this specific line of text was taken from page 11 of the journal it was found in.

Parenthetical citation

An MLA parenthetical citation is created when the author’s name is NOT in the sentence. Instead, the author’s name is in parentheses after the sentence, along with the page number.

Here is an MLA parenthetical citation example

When it comes to technology, we “need to be comfortable enough with technology tools and services that we can help point our patrons in the right direction, even if we aren’t intimately familiar with how the device works” (King 11).

In the above example, King’s name is not included in the sentence itself, so his name is in parentheses after the sentence, with 11 for the page number. The 11 indicates that the quote is found on page 11 in the journal.

Full reference

For every source that is cited using an in-text citation, there is a corresponding full reference. This allows readers to track down the original source.

At the end of the assignment, on the MLA works cited page , is the full reference. The full reference includes the full name of the author, the title of the article, the title of the journal, the volume and issue number, the date the journal was published, and the URL where the article was found.

Here is the full reference for King’s quote

King, David Lee. “Why Stay on Top of Technology Trends?” Library Technology Reports , vol. 54, no. 2, Feb.-Mar. 2018, ezproxy.nypl.org/login?url=//search-proquest-com.i.ezproxy.nypl.org/docview/2008817033?accountid=35635.

Readers can locate the article online via the information included above.

Citation overview

The next section of this guide focuses on how to structure an MLA in-text citation and reference in parentheses in various situations.

A narrative APA in-text citation and APA parenthetical citation are somewhat similar but have some minor differences. Check out our helpful guides, and others, on EasyBib.com!

Wondering how to handle these types of references in other styles? Check out our page on APA format , or choose from more styles .

Parenthetical Citation Reference Chart

Sources with two authors.

There are many books, journal articles, magazine articles, reports, and other source types written or created by two authors.

When a source has two authors, place both authors’ last names in the body of your work ( Handbook 232). The last names do not need to be listed in alphabetical order. Instead, follow the same order as shown on the source.

In an MLA in-text citation, separate the two last names with the word “and.” After both authors’ names, add a space and the page number where the original quote or information is found on.

Here is an example of an MLA citation in prose for a book with two authors

Gaiman and Pratchett further elaborate by sharing their creepy reminder that “just because it’s a mild night doesn’t mean that dark forces aren’t abroad. They’re abroad all of the time. They’re everywhere” (15).

Here is an example of an MLA parenthetical citation for a book with two authors

Don’t forget that “just because it’s a mild night doesn’t mean that dark forces aren’t abroad. They’re abroad all of the time. They’re everywhere” (Gaiman and Pratchett 15).

If you’re still confused, check out EasyBib.com’s MLA in-text citation generator, which allows you to create MLA in-text citations and other types of references in just a few clicks!

If it’s an APA book citation you’re looking to create, we have a helpful guide on EasyBib.com. While you’re at it, check out our APA journal guide!

Sources With Three or More Authors

There are a number of sources written or created by three or more authors. Many research studies and reports, scholarly journal articles, and government publications are developed by three or more individuals.

If you included the last names of all individuals in your MLA in-text citations or in parentheses, it would be too distracting to the reader. It may also cause the reader to lose sight of the overall message of the paper or assignment. Instead of including all last names, only include the last name of the first individual shown on the source. Follow the first author’s last name with the Latin phrase, “et al.” This Latin phrase translates to “and others.” Add the page number after et al.

Here’s an example of an MLA parenthetical citation for multiple authors

“School library programs in Croatia and Hong Kong are mainly focused on two major educational tasks. One task is enhancing students’ general literacy and developing reading habits, whereas the other task is developing students’ information literacy and research abilities” (Tam et al. 299).

The example above only includes the first listed author’s last name. All other authors are credited when “et al.” is used. If the reader wants to see the other authors’ full names, the reader can refer to the final references at the end of the assignment or to the full source.

The abbreviation et al. is used with references in parentheses, as well as in full references. To include the authors’ names in prose, you can either write each name out individually or, you can type out the meaning of et al., which is “and others.”

Here is an acceptable MLA citation in prose example for sources with more than three authors

School library programming in Croatia and Hong Kong is somewhat similar to programming in the United States. Tam, Choi, Tkalcevic, Dukic, and Zheng share that “school library programs in Croatia and Hong Kong are mainly focused on two major educational tasks. One task is enhancing students’ general literacy and developing reading habits, whereas the other task is developing students’ information literacy and research abilities” (299).

If your instructor’s examples of how to do MLA in-text citations for three or more authors looks different than the example here, your instructor may be using an older edition of this style. To discover more about previous editions, learn more here .

Need some inspiration for your research project? Trying to figure out the perfect topic? Check out our Dr. Seuss , Marilyn Monroe , and Malcolm X topic guides!

Sources Without an Author

It may seem unlikely, but there are times when an author’s name isn’t included on a source. Many digital images, films and videos, encyclopedia articles, dictionary entries, web pages, and more do not have author names listed.

If the source you’re attempting to cite does not have an author’s name listed, the MLA in-text citation or parenthetical citation should display the title. If the title is rather long, it is acceptable to shorten it in the body of your assignment. If you choose to shorten the title, make sure the first word in the full citation is also the first word used in the citation in prose or parenthetical citation. This is done to allow the reader to easily locate the full citation that corresponds with the reference in the text.

If, in the Works Cited list, the full reference has the title within quotation marks, include those quotation marks in the in-text citation or reference in parentheses. If the title is written in italics in the full reference, use italics for the title in the in-text citation or reference in parentheses as well.

Parenthetical Citations MLA Examples

The example below is from a poem found online, titled “the last time.” the poem’s author is unknown..

“From the moment you hold your baby in your arms you will never be the same. You might long for the person you were before, when you had freedom and time and nothing in particular to worry about” (“The Last Time”).

The example below is from the movie, The Englishman Who Went Up a Hill But Came Down a Mountain .

“Perhaps it would have been different if there hadn’t been a war, but this was 1917, and people were exhausted by loss. Those that were allowed to stay manned the pits, mining the coal that would fuel the ships. Twenty-four hours a day they labored” ( Englishman ).

Notice the shortened title in the above reference. This allows the reader to spend more time focusing on the content of your project, rather than the sources.

If you’re looking for an MLA in-text citation website to help you with your references, check out EasyBib Plus on EasyBib.com! EasyBib Plus can help you determine how to do in-text citations MLA and many other types of references!

Corporate Authors

Numerous government publications, research reports, and brochures state the name of the organization as the author responsible for publishing it.

When the author is a corporate entity or organization, this information is included in the MLA citation in prose or parenthetical citation.

“One project became the first to evaluate how e-prescribing standards work in certain long-term care settings and assessed the impact of e-prescribing on the workflow among prescribers, nurses, the pharmacies, and payers” (Agency for Healthcare Research and Quality 2).

If the full name of the organization or governmental agency is long in length, it is acceptable to abbreviate some words, as long as they are considered common abbreviations. These abbreviations should only be in the references with parentheses. They should not be used in citations in prose.

Here is a list of words that can be abbreviated in parentheses:

• Department = Dept.
• Government = Govt.
• Corporation = Corp.
• Incorporated = Inc.
• Company = Co.
• United States = US

Example of a shortened corporate author name in an MLA parenthetical citation

“Based on our analysis of available data provided by selected states’ departments of corrections, the most common crimes committed by inmates with serious mental illness varied from state to state” (US Govt. Accountability Office 14).

Here is how the same corporate author name would look in an MLA citation in prose

The United States Government Accountability Office states, “Based on our analysis of available data provided by selected states’ departments of corrections, the most common crimes committed by inmates with serious mental illness varied from state to state” (14).

Remember, citations in prose should not have abbreviations; other types of references can.

Looking for more information on abbreviations? Check out our page on MLA format.

Edited Books and Anthologies

Edited books and anthologies often include chapters or sections, each written by an individual author or a small group of authors. These compilations are placed together by an editor or a group of editors. There are tons of edited books and anthologies available today, ranging from ones showcasing Black history facts and literature to those focusing on notable individuals such as scientists like Albert Eintein and politicians such as Winston Churchill .

If you’re using information from an edited book or an anthology, include the chapter author’s name in your MLA citation in prose or reference in parentheses. Do not use the name(s) of the editor(s). Remember, the purpose of these references is to provide the reader with some insight as to where the information originated. If, after reading your project, the reader would like more information on the sources used, the reader can use the information provided in the full reference, at the very end of the assignment. With that in mind, since the full reference begins with the author of the individual chapter or section, that same information is what should be included in any citations in prose or references in parentheses.

Here is an example of an MLA citation in prose for a book with an editor

Weinstein further states that “one implication of this widespread adaptation of anthropological methods to historical research was the eclipse of the longstanding concern with “change over time,” and the emergence of a preference for synchronic, rather than diachronic, themes” (195).

Full reference at the end of the assignment

Weinstein, Barbara. “History Without a Cause? Grand Narratives, World History, and the Postcolonial Dilemma.” Postcolonial Studies: An Anthology , edited by Pramod K. Nayar, Wiley-Blackwell, 2015, p. 196. Wiley , www.wiley.com/en-us/Postcolonial+Studies%3A+An+Anthology-p-9781118780985.

Once you’re through with writing and citing, run your paper through our innovative plagiarism checker ! It’s the editor of your dreams and provides suggestions for improvement.

Sources Without Page Numbers and Online Sources

When a source has no page numbers, which is often the case with long web page articles, e-books, and numerous other source types, do not include any page number information in the body of the project. Do not estimate or invent your own page numbering system for the source. If there aren’t any page numbers, omit this information from the MLA in-text citation. There may, however, be paragraph numbers included in some sources. If there are distinct and clear paragraph numbers directly on the source, replace the page number with this information. Make it clear to the reader that the source is organized by paragraphs by using “par.” before the paragraph number, or use “pars.” if the information is from more than one paragraph.

Here is an example of how to create an MLA parenthetical citation for a website

“She ran through the field with the wind blowing in her hair and a song through the breeze” (Jackson par. 5).

Here’s an example of an MLA citation in prose for a website

In Brenner’s meeting notes, he further shared his motivation to actively seek out and secure self help resources when he announced, “When we looked at statistical evidence, the most commonly checked out section of the library was self-help. This proves that patrons consistently seek out help for personal issues and wish to solve them with the help of the community’s resources” (pars. 2-3).

Here’s another MLA in-text citation example for a website

Holson writes about a new mindful app, which provides listeners with the soothing sound of not only Bob Ross’ voice, but also the “soothing swish of his painter’s brush on canvas.”

In above example, the information normally found in the parentheses is omitted since there aren’t any page, parentheses, or chapter numbers on the website article.

Looking for APA citation website examples? We have what you need on EasyBib.com!

Need an in-text or parenthetical citation MLA website? Check out EasyBib Plus on EasyBib.com! Also, check out MLA Citation Website , which explains how to create references for websites.

Citing the Same Source Multiple Times

It may seem redundant to constantly include an author’s name in the body of a research project or paper. If you use an author’s work in one section of your project, and the next piece of information included is by the same individual(s), then it is not necessary to share in-text, whether in prose or in parentheses, that both items are from the same author. It is acceptable to include the last name of the author in the first use, and in the second usage, only a page number needs to be included.

Here is an example of how to cite the same source multiple times

“One of the major tests is the Project for Standardized Assessment of Information Literacy Skills. This measurement was developed over four years as a joint partnership between the Association of Research Libraries and Kent State University” (Tong and Moran 290). This exam is just one of many available to measure students’ information literacy skills. It is fee-based, so it is not free, but the results can provide stakeholders, professors, curriculum developers, and even librarians and library service team members with an understanding of students’ abilities and misconceptions. It is not surprising to read the results, which stated that “upper-level undergraduate students generally lack information literacy skills as evidenced by the results on this specific iteration of the Standardized Assessment of Information Literacy Skills test” (295).

The reader can assume that the information in the second quote is from the same article as the first quote. If, in between the two quotes, a different source is included, Tong and Moran’s names would need to be added again in the last quote.

Here is the full reference at the end of the project:

Tong, Min, and Carrie Moran. “Are Transfer Students Lagging Behind in Information Literacy?” Reference Services Review , vol. 45, no. 2, 2017, pp. 286-297. ProQuest , ezproxy.nypl.org/login?url=//search-proquest-com.i.ezproxy.nypl.org/docview/1917280148?accountid=35635.

Citing Two or More Sources in the Same In-text Citation

According to section 6.30 of the Handbook , parenthetical citations containing multiple sources in a single parenthesis should be separated by semicolons.

(Granger 5; Tsun 77) (Ruiz 212; Diego 149)

Citing Multiple Works by the Same Author in One In-text Citation

Just as you might want to cite two different sources at the same time, it can also be useful to cite different works by the same author all at once.

Section 6.30 of the Handbook specifies that “citations of different locations in a single source are separated by commas” (251).

(Maeda 59, 174-76, 24) (Kauffman 7, 234, 299)

Furthermore, if you are citing multiple works by the same author, the titles should be joined by and if there are only two. Otherwise, use commas and and .

(Murakami, Wild Sheep Chase and Norwegian Wood ) (Murakami, Wild Sheep Chase , Norwegian Wood , and “With the Beatles”)

Abbreviating Titles

When listing the titles, be aware that long titles in parenthetical citations can distract the reader and cause confusion. It will be necessary to shorten the titles appropriately for in-text citations. According to the Handbook , “shorten the title if it is longer than a noun phrase” (237). The abbreviated title should begin with the word by which the title is alphabetized.

Best practice is to give the first word the reference is listed by so the source is easily found in the works cited. Omit articles that start a title: a, an, the. When possible, use the first noun (and any adjectives before it). For more on titles and their abbreviations, head to section 6.10 of the Handbook .

• Full title :  The Curious Incident of the Dog in the Night-Time 
• Abbreviated: Curious
• Full title:  The Disreputable History of Frankie Landau-Banks 
• Abbreviated:  Disreputable History

Religious Works and Scriptures

There are instances when religious works are italicized in the text of a project, and times when it is not necessary to italicize the title.

If you’re referring to the general religious text, such as the Bible, Torah, or Qur’an, it is not necessary to italicize the name of the scripture in the body of the project. If you’re referring to a specific edition of a religious text, then it is necessary to italicize it, both in text and in the full reference.

Here are some commonly used editions:

• King James Bible
• The Orthodox Jewish Bible
• American Standard Bible
• The Steinsaltz Talmud
• The Babylonian Talmud
• New International Bible

When including a reference, do not use page numbers from the scripture. Instead, use the designated chapter numbers and verse numbers.

MLA example of an in-text citation for a religious scripture

While, unacceptable in today’s society, the Bible is riddled with individuals who have two, three, and sometimes four or more spouses. One example in the King James Bible , states that an individual “had two wives, the name of the one was Hannah, and the name of the other Peninnah. Peninnah had children, but Hannah had no children” (1 Sam. 1.2)

The only religious scripture that is allowed to be in the text of a project, but not in the Works Cited list, is the Qur’an. There is only one version of the Qur’an. It is acceptable to include the name of the Qur’an in the text, along with the specific chapter and verse numbers.

If you’re attempting to create a reference for a religious work, but it’s not considered a “classic” religious book, such as a biography about Mother Teresa , or a book about Muhammed Ali’s conversion, then a reference in the text and also on the final page of the project is necessary.

If you’re creating an APA bibliography , you do not need to create a full reference for classic religious works on an APA reference page .

For another MLA in-text citation website and for more on the Bible and other source types, click here .

Long or Block Quotes

Quotes longer than four lines are called, “block quotes.” Block quotes are sometimes necessary when you’re adding a lengthy piece of information into your project. If you’d like to add a large portion of Martin Luther King ’s “I Have a Dream” speech, a lengthy amount of text from a Mark Twain book, or multiple lines from Abraham Lincoln ’s Gettysburg Address, a block quote is needed.

MLA block quotes are formatted differently than shorter quotes in the body of a project. Why? The unique formatting signals to the reader that they’re about to read a lengthy quote.

Block quotes are called block quotes because they form their own block of text. They are set apart from the body of a project with different spacing and margins.

Begin the block quote on a new line. The body of the full project should run along the one inch margin, but the block quote should be set in an inch and a half. The entire quote should be along the inch and a half margin.

If there aren’t any quotation marks in the text itself, do not include any in the block quote. This is very different than standard reference rules. In most cases, quotation marks are added around quoted material. For block quotes, since the reader can see that the quoted material sits in its own block, it is not necessary to place quotation marks around it.

Here is an MLA citation in prose example of a block quote

Despite Bruchac’s consistent difficult situations at home, basketball kept his mind busy and focused:

When I got off the late bus that afternoon, my grandparents weren’t home. The store was locked and there was a note from Grama on the house door. Doc Magovern had come to the house because Grampa was “having trouble with his blood.” Now they were off to the hospital and I “wasn’t to worry.” This had happened before. Grampa had pernicious anemia and sometimes was very sick. So, naturally, it worried the pants off me. I actually thought about taking my bike down the dreaded 9N the three miles to the Saratoga Hospital. Instead, I did as I knew they wanted. I opened the store and waited for customers. None came, though, and my eye was caught by the basketball stowed away as usual behind the door. I had to do something to take my mind off what was happening to Grampa. I took out the ball and went around the side. (13)

Notice the use of the colon prior to the start of the block quote. Do not use a colon if the block quote is part of the sentence above it.

Here is an example of the same block quote, without the use of the colon:

Despite Bruchac’s consistent difficult situations at home, it was clear that basketball kept his mind busy and focused when he states

When I get off the late bus that afternoon, my grandparents weren’t home…

If two or more paragraphs are included in your block quote, start each paragraph on a new line.

Looking for additional helpful websites? Need another MLA in-text citation website? Check out the style in the news . We also have other handy articles, guides, and posts to help you with your research needs. Here’s one on how to write an MLA annotated bibliography .

Visit our EasyBib Twitter feed to discover more citing tips, fun grammar facts, and the latest product updates.

If you’re looking for information on styling an APA citation , EasyBib.com has the guides you need!

MLA Handbook . 9th ed., Modern Language Association of America, 2021.

Published October 31, 2011. Updated July 5, 2021.

Written and edited by Michele Kirschenbaum and Elise Barbeau. Michele Kirschenbaum is a school library media specialist and the in-house librarian at EasyBib.com. Elise Barbeau is the Citation Specialist at Chegg. She has worked in digital marketing, libraries, and publishing.

MLA Formatting Guide

MLA Formatting

• Annotated Bibliography
• Bibliography
• Block Quotes
• et al Usage
• In-text Citations
• Paraphrasing
• Page Numbers
• Sample Paper
• Works Cited
• MLA 8 Updates
• MLA 9 Updates
• View MLA Guide

Citation Examples

• Book Chapter
• Journal Article
• Magazine Article
• Newspaper Article
• Website (no author)
• View all MLA Examples

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In MLA style, if multiple sources have the same author , the titles should be joined by and if there are only two. Otherwise, use commas and and .

• In-text citation: (Austen Emma and Mansfield Park )
• Structure: (Last name 1st Source’s title and 2nd Source’s title )
• In-text citation: (Leung et al. 58)

If the author is a corporate entity or organization, included the name of the corporate entity or organization in the in-text citation.

• In-text citation: (Agency for Healthcare Research and Quality 2)

Yes, there’s an option to download source citations as a Word Doc or a Google Doc. You may also copy citations from the EasyBib Citation Generator and paste them into your paper.

Yes! Whether you’d like to learn how to construct citations on your own, our Autocite tool isn’t able to gather the metadata you need, or anything in between, manual citations are always an option. Click here for directions on using creating manual citations.

An in-text citation is a shortened version of the source being referred to in the paper. As the name implies, it appears in the text of the paper. A works cited list entry, on the other hand, details the complete information of the source being cited and is listed within the works cited list at the end of the paper after the main text. The in-text citation is designed to direct the reader to the full works cited list entry. An example of an in-text citation and the corresponding works cited list entry for a journal article with one author is listed below:

In-text citation template and example:

Only the author surname (or the title of the work if there is no author) is used in in-text citations to direct the reader to the corresponding reference list entry. For citations in prose, use the first name and surname of the author for the first occurrence. In subsequent citations, use only the surname. In parenthetical citations, always use only the surname of the author. If you are directly quoting the source, the page number should also be included in the in-text citation.

Citation in prose:

First mention: Christopher Collins ….

Subsequent occurrences: Collins ….

Parenthetical:

….(Collins)

….(Collins 5)

Works cited list entry template and example:

The title of the article is in plain text and title case and is placed inside quotation marks. The title of the journal is set in italics.

Surname, F. “Title of the Article.” Journal Title , vol. #, no. #, Publication Date, page range.

Collins, Christopher. “On Posthuman Materiality: Art-Making as Rhizomatic Rehearsal.” Text and Performance Quarterly , vol. 39, no. 2, 2019, pp. 153–59.

Note that because the author’s surname (Collins) was included in the in-text citation, the reader would then be able to easily locate the works cited list entry since the entry begins with the author’s surname.

An in-text citation is a short citation that is placed next to the text being cited. The basic element needed for an in-text citation is the author’s name . The publication year is not required in in-text citations. Sometimes, page numbers or line numbers are also included, especially when text is quoted from the source being cited. In-text citations are mentioned in the text in two ways: as a citation in prose or a parenthetical citation.

Citations in prose are incorporated into the text and act as a part of the sentence. Usually, citations in prose use the author’s full name when cited the first time in the text. Thereafter, only the surname is used. Avoid including the middle initial even if it is present in the works-cited-list entry.

Parenthetical

Parenthetical citations add only the author’s surname at the end of the sentence in parentheses.

Examples of in-text citations

Here are a few tips to create in-text citations for sources with various numbers and types of authors:

Use both the first name and surname of the author if you are mentioning the author for the first time in the prose. In subsequent occurrences, use only the author’s surname. Always use only the surname of the author in parenthetical citations.

First mention: Sheele John asserts …. (7).

Subsequent occurrences: John argues …. (7).

…. (John 7).

Two authors

Use the first name and surname of both authors if you are mentioning the work for the first time in the prose. In subsequent occurrences, use only the surnames of the two authors. Always use only the authors’ surnames in parenthetical citations. Use “and” to separate the two authors in parenthetical citations.

First mention: Katie Longman and Clara Sullivan ….

Subsequent occurrences: Longman and Sullivan ….

…. ( Longman and Sullivan).

Three or more authors

For citations in prose, use the first name and surname of the first author followed by “and others” or “and colleagues.” For parenthetical citations, use only the surname of the first author followed by “et al.”

Lincy Mathew and colleagues…. or Lincy Mathew and others ….

…. (Mathew et al.).

Corporate author

For citations in prose, treat the corporate author like you would treat the author’s name. For parenthetical citations, shorten the organization name to the shortest noun phrase. For example, shorten the Modern Language Association of America to Modern Language Association.

The Literary Society of Malaysia….

…. (Literary Society).

If there is no author for the source, use the source’s title in place of the author’s name for both citations in prose and parenthetical citations.

When you add such in-text citations, italicize the text of the title. If the source title is longer than a noun phrase, use a shortened version of the title. For example, shorten the title Fantastic Beasts and Where to Find Them to Fantastic Beasts .

Knowing Body of Work explains …. (102).

….( Knowing Body 102).

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• In-Text Citation Examples
• When neither the author nor the page number is mentioned in the body of the sentence, you should include both the author’s last name and the page number in the parenthetical citation.

Colleges and universities need to create policies that foster inclusion for low-income students (Jack 24).

• When the author’s name is mentioned in the sentence, you should include only the page number in your parenthetical citation.

As Anthony Jack argues, colleges and universities need to create policies that foster inclusion for low-income students (24).

• If the source you are writing about does not have page numbers, or if you consulted an e-book version of the source, you should include only the author’s name in the parenthetical citation:

Colleges and universities need to create policies that foster inclusion for low-income students (Jack).

• If you mention the author in the body of the sentence and there is no page number in the source, you should not include a parenthetical citation.

As Anthony Jack argues, colleges and universities need to create policies that foster inclusion for low-income students.

• If you are referring to an entire work rather than a specific page, you do not need to include a page number.

In The Privileged Poor, Anthony Jack describes many obstacles that low-income students face at selective colleges and universities.

• If you are referring to a source that has no listed author, you should include the title (or a shortened version of the title) in your parenthetical citation.

Harvard College promises “to educate the citizens and citizen-leaders for our society” (“Mission, Vision, & History”).

• If you are referring to a source that has two authors, you should include both authors in your parenthetical citation.

The researchers tested whether an intervention during the first year of college could improve student well-being (Walton and Cohen 1448).

• If you refer to a source that has more than two authors, you should include the first author’s name followed by et al. ( Et al. is an abbreviation for et alia which means “and others” in Latin.) When you use et al. in a citation, you should not put it in italics.

The researchers studied more than 12,000 students who were interested in STEM fields (LaCosse et al. 8).

• If you refer to more than one source by the same author in your paper, you should include the title (or a shortened version of the title) in your parenthetical citation so that readers will know which source to look for in your Works Cited list. If you mention the author’s name in the sentence, you only need to include the title and page number. If you mention the author and title in the sentence, you only need to include the page number.

Colleges and universities need to create policies that foster inclusion for low-income students (Jack, Privileged Poor 24).

According to Anthony Jack, colleges and universities need to create policies that foster inclusion for low-income students ( Privileged Poor 24).

As Anthony Jack writes in Privileged Poor, colleges and universities need to create policies that foster inclusion for low-income students (24).

• If you want to credit multiple authors for making the same point, you can include them all in one parenthetical citation. 

Students who possess cultural capital, measured by proxies like involvement in literature, art, and classical music, tend to perform better in school (Bourdieu and Passeron; Dumais; Orr).

• If you refer to a source that includes line numbers in the margins, numbered paragraphs, numbered chapters, or numbered sections rather than page numbers, you should include the number in your parenthetical citation, along with “line,” “ch./ chs.,” or “sec./secs.”   You can include stable numbering like chapters even when there are no stable page numbers (as in an e-book). You should separate “line” or other designation from the work’s title or author’s name with a comma.  If the source does not include this type of numbering, you should not include it either.

We learn that when he went to the store to buy clothes for his son, “a frantic inspection of the boys’ department revealed no suits to fit the new-born Button” (Fitzgerald, ch.2).

• If you are citing a play, you should include the act and scene along with line numbers (for verse) or page numbers, followed by act and scene, (for prose).

Guildenstern tells Hamlet that “there has been much throwing about of brains” (Shakespeare, 2.2. 381-382).

Chris is in this mindset when he says, “a couple minutes, and your whole life changes, that’s it. It’s gone” (Nottage, 13; act 1, scene1).

• If you are referring to a video or audio recording that contains time stamps, you should include the time in your parenthetical citation to make it easy for your readers to find the part of the recording that you are citing.

In the Stranger Things official trailer, the audience knows that something unusual is going to happen from the moment the boys get on their bicycles to ride off into the night (0:16).

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MLA in-text citations

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In-text citations are a brief version of citations that are used to provide information about the sources being referred to by the authors. They are used in the text to indicate to the reader that complete information of the citations referred to is available in the works-cited list, which will enable a reader to locate or access the sources being cited.

The basic element needed for an in-text citation is the author’s name . The publication year is not required in in-text citations. Sometimes, page numbers or line numbers are also included, especially when text is quoted from the source being cited. In-text citations are mentioned in the text in two ways: citations in prose and parenthetical citations.

Citation in prose

Citations in prose are in-text citations where some of the citation information is incorporated into the text as a part of the sentence. Usually, the author’s full name is included naturally in the text (instead of in a parenthetical citation). Thereafter, only the surname is used. Here’s an example of a citation in prose (first mention of the author):

Christopher Arp identifies the geography of Alaska lake districts.

Parenthetical citation

Parenthetical citations are in-text citations that add source information at the end of a sentence in parenthesis. Here’s one example of a parenthetical citation:

The geography of Alaska lake districts is identified (Arp).

When and how to include other components

When you quote text from a source word-for-word, try to include the location of the quote. Usually, this is the page number of where the quote is found. If including a page number, there is no need to include page, p., or pp. before the page number. Here’s an example of a quotation with a page number indicated:

According to Ann Fienup-Riordan, “ Fieldwork Turned on Its Head ” (15).

For other types of sources, use other relevant indicators. For example, use a paragraph number if there are no pages or a time stamp for a video.

In-text citations should be concise. Do not repeat author names in parenthesis if the name is mentioned in the text. If you want to cite a chapter number, a scene, or a line number, follow the below guidelines:

Citation in prose:

Parenthetical citation:

Examples of in-text citations with different numbers of authors

Here are a few examples of in-text citations for different numbers of authors:

Use both the first name and surname of the author if you are mentioning the author for the first time in the prose. In subsequent occurrences, use only the author’s surname. Always use the surname of the author in parenthetical citations.

1st mention:   Randall Hill studies ….

subsequent mentions:    Hill explores ….

Parenthetical:

Two authors

Use the first name and surname of both authors if you are mentioning the work for the first time in the prose. In subsequent occurrences, use only the surnames of the two authors. Always use only the surnames of the authors in parenthetical citations. Use “and” to separate the two authors in parenthetical citations.

1st mention:   Magda Miranda and Rea Dennis ….

subsequent mentions:   Miranda and Dennis ….

….(Miranda and Dennis)

Three or more authors

For citations in prose, use the first name and surname of the first author followed by “and others” or “colleagues.” In parenthetical citations, use only the surname of the first author followed by “et al.”

Alice Rearden et al. and colleagues…. or Alice Rearden and others ….

….(Rearden et al.)

Corporate author

For citations in prose, treat the corporate author similar to how you would treat author names. For parenthetical citations, shorten the organization name wherever possible.

The Academy of American Poets….

….(American Poets)

If there is no author for the source, use the source title in place of the author’s name for both citations in-prose and parenthetical citations.

When you add such in-text citations, italicize the text. If the source title is too long, use a shortened version of the title in the prose.

Sticky Performances exhibits …. (89)

….( Sticky 89)

Citing special cases

Works having the same surname(s), different first name(s).

If two or more entries in the works-cited list have the same surname, use the first name, not only in the first mention, but also in subsequent occurrences in prose to avoid confusion. In parenthetical citations, include the first initials of the author.

Citation in prose templates:

First name Surname of the first author

First name Surname of the second author

Citation prose examples:

Steve Baker

Parenthetical templates:

(A. Author Surname)

(B. Author Surname)

Parenthetical examples:

If the first initials are also the same, use full first name in parenthetical citations too.

(Cheng Lee)

Works by the same author(s)

If two or more entries in the works-cited list are contributions of the same author(s), add the title in in-text citations to help the reader locate the source you are citing. If the title is long, you can use a shortened title.

Arlander says in The Peregrine that ….

There are different kinds of birds and a distinct species is studied (Arlander, The Peregrine )

Works listed by title

If the works-cited-list entry has a source listed by the title, use the title in both citations in prose and parenthetical citations. If the title is long, you can use a short title.

Interview with Anna Deveare Smith reveals ….

( Anna Deveare Smith )

Punctuation in parenthetical citations

Do not introduce any punctuation between the author’s name and the page number.

(Scott 102)

If you want to include more page numbers, separate them by commas.

(Sagar 112, 121–24, 129)

If the number introduced is other than a page number (e.g., line number, chapter number, paragraph number), add the label before the number. Use a comma after the author’s name.

(Dcosta, par. 4)

If you want to cite a specific part on a page, separate the part from the page number by a semicolon. Multiple parts, if referred, are separated by commas.

(Bellana 127; par. 41, lines 6–8)

If you introduce multiple citations, separate them by semicolons.

(Milinda 23; Jacob 47)

If you need to insert a title, separate the author name and the title by a comma. However, do not introduce any punctuation between the title and the page number.

(Rich, Painful Stories 128)

If you cite two works by the same author, separate the titles by “and.” For more than two works by the same author, separate the titles by commas, but add “and” along with a serial comma before the last title.

(Gleason, “Great Migration” and “Appalachian Affects”)

(Brisini, “Practice,” “Precarity,” and “Phytomorphizing”)

Resource Types

For additional information on MLA format, select from one of the resource types below. For help creating MLA citations, check out the BibMe MLA citation generator .

• How to cite a Book in MLA
• How to cite a Magazine in MLA
• How to cite a Newspaper in MLA
• How to cite a Website in MLA
• How to cite a Journal Article in MLA
• How to cite a Movie in MLA
• How to cite an Interview in MLA
• How to cite a Lecture in MLA
• How to cite a TV Show / Radio Broadcast in MLA
• How to cite an Encyclopedia in MLA
• How to cite a Photograph in MLA

MLA Format:

• In-Text Citation Basics
• Works Cited Page

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APA 7th Referencing

• APA 7th referencing
• Author information

In-text citations

• Reference lists
• Journal & newspaper articles
• Books & book chapters
• Websites & social media
• Course materials
• Dictionaries & encyclopedias
• Audio-visual media
• Secondary sources
• Other reference examples
• Education sources
• Health sources
• Indigenous Knowledges
• Legal sources
• Academic Writer & APA style guide
• Referencing tools & training
• More referencing styles This link opens in a new window

Acknowledgement

This guide is based on the University of Queensland's  APA7th Referencing style guide  and is used under a  Creative Commons Attribution-NonCommercial 4.0 International License.

• Date of publication
• Page numbers
• Can't find it here?
• Parenthetical in-text citations include the author's family name and year of publication within parenthesis (Thompson, 2018).
• Narrative in-text citations include the author's family name in the sentence and the year of publication follows in parenthesis "Thompson (2018) has argued that ......."
• The in-text citation appears within the body of the paper where the information has been referred to – whether that is within the main body of the text or a table, figure, footnote or appendix. This allows readers to find the corresponding entry in the alphabetical reference list at the end of the paper that will contain the full details of the source.
• Each source cited in-text must appear in the reference list, and each source in the reference list must appear in-text (or in a table, figure, footnote, or appendix).

Please refer to  Author information  for detailed advice.

If you have two or more works by different authors

• List works alphabetically (as they appear in the reference list)
• Separate references with a semicolon ;   e.g.  (Noble et al., 2015; Walker, 2011)  OR   Noble et al. (2015) and Walker (2011) stated that ...

If you have two or more works by same author(s)

• Order references by year of publication
• Put n.d. (no date) references first
• Put "in press" references last
• Only use the author family name or groups name once then list the years
• e.g.  (Lewis, n.d., 2012, 2015, 2016, in press) OR  (Education Queensland, 2011, 2013) OR  (Education Queensland, 2011; Lewis, 2012, 2015, 2016, in press)
• E.g. (Cleary, 2019) or "Thompson (2018) argues that ..."
• If the month is provided in the publication details do not include it. 
• E.g. (Harris, n.d.)
• E.g. (Taylor, in press).
• It is sometimes helpful to your reader to be specific about what part of the work contains the relevant information,  e.g. page numbers (Cleary, 2019, p.16) or (Cleary, 2019, pp.16-18).
• When including quotes in-text you should include the specific part of the source that the quote comes from.
• Tables, chapters, paragraphs or figures can also be helpful,  e.g. (Cleary, 2019, Table 3).

For works without a page number , you can add:

• paragraph number (manually count if not listed),  e.g. (Kennedy, 2019, para.8)
• heading or section name,  e.g. (Harris, 2018, Behaviour Therapy section)
• act, scene and line(s) for plays,  e.g. (Wilde, 1895/1997, 1.1.6-8) (means Act 1.Scene 1.Line(s) 6-8)
• canonically numbered sections for religious or classical works,  e.g. (Genesis 15:6) (include book, chapter, verse, line or canto in place of page number)

For a fuller list of examples see  APA Style Citing Specific Parts of a Source

• Academic writer: APA's tool for teaching and learning effective writing This link opens in a new window Academic Writer is produced by APA to help with academic referencing and writing. It provides quick guides, tutorials, self-quizzes, sample papers, sample references, sample tables, and sample figures to help you master the APA style.
• APA Style Blog The APA Style Blog is written by APA Style experts and provides advice on all aspects of the style, including the trickier nuances. Use the search tool for specific queries or browse the Style and Grammar Guidelines from the drop down menu at the top of the page.
• Direct quotes
• Block quotes
• Quoting audiovisual works
• A direct quotation reproduces word-for-word material taken directly from another author’s work, or from your own previously published work.
• If the quotation is fewer than 40 words, incorporate it into your sentences and paragraphs, and enclose it in double quotation marks ( "..." ).
• Include the author, year, and specific page number for that quotation.  Place a comma after the year and use  p.  for single page,  pp.  for multiple pages
• Place the citation directly after the quotation.
• For material without page numbers, give the paragraph number or a time stamp.
• Include a complete reference in the reference list.

David Copperfield starts with "Whether I shall turn out to be the hero of my own life, or whether that station will be held by anybody else, these pages must show" (Dickens, 1869, p. 1/1998, p. 1).

(Smith, 2003, p. 105)   OR   Smith (2003) has argued that "......" (p. 105)

(Brown, 1999, pp. 49-50) OR   As Brown (1999) found "......" (pp. 49-50) 

If the quotation comprises 40 or more words, include it in an indented, freestanding block of text, without quotation marks. Make it double spaced. For example:

Whether I shall turn out to be the hero of my own life, or whether that station will be held by anybody else, these pages must show. To begin my life with the beginning of my life, I record that I was born (as I have been informed and believe) on a Friday, at twelve o’clock at night. It was remarked that the clock began to strike, and I began to cry, simultaneously. (Dickens, 1896, p. 1/1998, p. 1)

Note that a page number is required. Place a comma after the year and use p. for single page, pp. for multiple pages.

Add a  time stamp  in place of a page number when quoting from audiovisual works such as videos, songs, TV shows.

(Yates, 2019, 1:14)

(Henderson, 2017, 2:30:14)

(Anderson, 2019, 2:17) OR   Anderson (2019) noted that "...." (2:17)

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• Last Updated: Mar 28, 2024 8:12 AM
• URL: https://libguides.mq.edu.au/APA7_referencing

There is unequivocal evidence that Earth is warming at an unprecedented rate. Human activity is the principal cause.

• While Earth’s climate has changed throughout its history , the current warming is happening at a rate not seen in the past 10,000 years.
• According to the Intergovernmental Panel on Climate Change ( IPCC ), "Since systematic scientific assessments began in the 1970s, the influence of human activity on the warming of the climate system has evolved from theory to established fact." 1
• Scientific information taken from natural sources (such as ice cores, rocks, and tree rings) and from modern equipment (like satellites and instruments) all show the signs of a changing climate.
• From global temperature rise to melting ice sheets, the evidence of a warming planet abounds.

The rate of change since the mid-20th century is unprecedented over millennia.

Earth's climate has changed throughout history. Just in the last 800,000 years, there have been eight cycles of ice ages and warmer periods, with the end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.

The current warming trend is different because it is clearly the result of human activities since the mid-1800s, and is proceeding at a rate not seen over many recent millennia. 1 It is undeniable that human activities have produced the atmospheric gases that have trapped more of the Sun’s energy in the Earth system. This extra energy has warmed the atmosphere, ocean, and land, and widespread and rapid changes in the atmosphere, ocean, cryosphere, and biosphere have occurred.

Earth-orbiting satellites and new technologies have helped scientists see the big picture, collecting many different types of information about our planet and its climate all over the world. These data, collected over many years, reveal the signs and patterns of a changing climate.

Scientists demonstrated the heat-trapping nature of carbon dioxide and other gases in the mid-19th century. 2 Many of the science instruments NASA uses to study our climate focus on how these gases affect the movement of infrared radiation through the atmosphere. From the measured impacts of increases in these gases, there is no question that increased greenhouse gas levels warm Earth in response.

Scientific evidence for warming of the climate system is unequivocal.

Intergovernmental Panel on Climate Change

Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that Earth’s climate responds to changes in greenhouse gas levels. Ancient evidence can also be found in tree rings, ocean sediments, coral reefs, and layers of sedimentary rocks. This ancient, or paleoclimate, evidence reveals that current warming is occurring roughly 10 times faster than the average rate of warming after an ice age. Carbon dioxide from human activities is increasing about 250 times faster than it did from natural sources after the last Ice Age. 3

The Evidence for Rapid Climate Change Is Compelling:

Global Temperature Is Rising

The planet's average surface temperature has risen about 2 degrees Fahrenheit (1 degrees Celsius) since the late 19th century, a change driven largely by increased carbon dioxide emissions into the atmosphere and other human activities. 4 Most of the warming occurred in the past 40 years, with the seven most recent years being the warmest. The years 2016 and 2020 are tied for the warmest year on record. 5 Image credit: Ashwin Kumar, Creative Commons Attribution-Share Alike 2.0 Generic.

The Ocean Is Getting Warmer

The ocean has absorbed much of this increased heat, with the top 100 meters (about 328 feet) of ocean showing warming of 0.67 degrees Fahrenheit (0.33 degrees Celsius) since 1969. 6 Earth stores 90% of the extra energy in the ocean. Image credit: Kelsey Roberts/USGS

The Ice Sheets Are Shrinking

The Greenland and Antarctic ice sheets have decreased in mass. Data from NASA's Gravity Recovery and Climate Experiment show Greenland lost an average of 279 billion tons of ice per year between 1993 and 2019, while Antarctica lost about 148 billion tons of ice per year. 7 Image: The Antarctic Peninsula, Credit: NASA

Glaciers Are Retreating

Glaciers are retreating almost everywhere around the world — including in the Alps, Himalayas, Andes, Rockies, Alaska, and Africa. 8 Image: Miles Glacier, Alaska Image credit: NASA

Snow Cover Is Decreasing

Satellite observations reveal that the amount of spring snow cover in the Northern Hemisphere has decreased over the past five decades and the snow is melting earlier. 9 Image credit: NASA/JPL-Caltech

Sea Level Is Rising

Global sea level rose about 8 inches (20 centimeters) in the last century. The rate in the last two decades, however, is nearly double that of the last century and accelerating slightly every year. 10 Image credit: U.S. Army Corps of Engineers Norfolk District

Arctic Sea Ice Is Declining

Both the extent and thickness of Arctic sea ice has declined rapidly over the last several decades. 11 Credit: NASA's Scientific Visualization Studio

Extreme Events Are Increasing in Frequency

The number of record high temperature events in the United States has been increasing, while the number of record low temperature events has been decreasing, since 1950. The U.S. has also witnessed increasing numbers of intense rainfall events. 12 Image credit: Régine Fabri,  CC BY-SA 4.0 , via Wikimedia Commons

Ocean Acidification Is Increasing

Since the beginning of the Industrial Revolution, the acidity of surface ocean waters has increased by about 30%. 13 , 14 This increase is due to humans emitting more carbon dioxide into the atmosphere and hence more being absorbed into the ocean. The ocean has absorbed between 20% and 30% of total anthropogenic carbon dioxide emissions in recent decades (7.2 to 10.8 billion metric tons per year). 1 5 , 16 Image credit: NOAA

1. IPCC Sixth Assessment Report, WGI, Technical Summary . B.D. Santer et.al., “A search for human influences on the thermal structure of the atmosphere.” Nature 382 (04 July 1996): 39-46. https://doi.org/10.1038/382039a0. Gabriele C. Hegerl et al., “Detecting Greenhouse-Gas-Induced Climate Change with an Optimal Fingerprint Method.” Journal of Climate 9 (October 1996): 2281-2306. https://doi.org/10.1175/1520-0442(1996)009<2281:DGGICC>2.0.CO;2. V. Ramaswamy, et al., “Anthropogenic and Natural Influences in the Evolution of Lower Stratospheric Cooling.” Science 311 (24 February 2006): 1138-1141. https://doi.org/10.1126/science.1122587. B.D. Santer et al., “Contributions of Anthropogenic and Natural Forcing to Recent Tropopause Height Changes.” Science 301 (25 July 2003): 479-483. https://doi.org/10.1126/science.1084123. T. Westerhold et al., "An astronomically dated record of Earth’s climate and its predictability over the last 66 million years." Science 369 (11 Sept. 2020): 1383-1387. https://doi.org/10.1126/science.1094123

2. In 1824, Joseph Fourier calculated that an Earth-sized planet, at our distance from the Sun, ought to be much colder. He suggested something in the atmosphere must be acting like an insulating blanket. In 1856, Eunice Foote discovered that blanket, showing that carbon dioxide and water vapor in Earth's atmosphere trap escaping infrared (heat) radiation. In the 1860s, physicist John Tyndall recognized Earth's natural greenhouse effect and suggested that slight changes in the atmospheric composition could bring about climatic variations. In 1896, a seminal paper by Swedish scientist Svante Arrhenius first predicted that changes in atmospheric carbon dioxide levels could substantially alter the surface temperature through the greenhouse effect. In 1938, Guy Callendar connected carbon dioxide increases in Earth’s atmosphere to global warming. In 1941, Milutin Milankovic linked ice ages to Earth’s orbital characteristics. Gilbert Plass formulated the Carbon Dioxide Theory of Climate Change in 1956.

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Header image shows clouds imitating mountains as the sun sets after midnight as seen from Denali's backcountry Unit 13 on June 14, 2019. Credit: NPS/Emily Mesner Image credit in list of evidence: Ashwin Kumar, Creative Commons Attribution-Share Alike 2.0 Generic.

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