You’ve spent hours writing a strong paper—researching, drafting, and revising. Then you hit the citations section and suddenly you’re not sure whether it’s (Smith & Jones, 2022) or Smith and Jones (2022), or whether that three-author source needs “et al.” or the full list. APA in-text citation rules are precise, and the smallest error can cost you marks.

This comprehensive guide covers every APA 7th edition in-text citation rule—from the basic parenthetical format through block quotes, missing information, secondary sources, source-by-source examples, and the changes from APA 6. By the end you’ll be able to cite any source confidently.

What Is an APA In-Text Citation?

An APA in-text citation is a compact signal within your paper’s body text that tells the reader: “this idea, fact, or quotation came from another author—here’s enough information to find the full source in my reference list.” According to the official APA Style guidelines, in-text citations serve three purposes simultaneously: they give credit to original authors, allow readers to locate sources, and demonstrate the depth of your engagement with the scholarly literature.

The Two-Element Core Formula

Every APA in-text citation—regardless of source type, number of authors, or citation style—is built on two elements:

1. Author(s) Last Name(s) — the person(s) or organization responsible for the work
2. Year of Publication — the year the specific version or edition you used was published

Together these produce the signature APA format: (Smith, 2020). This compact citation links directly to the full reference list entry: Smith, J. (2020). Title of the book. Publisher.

When Do You Need an In-Text Citation?

The rule of thumb is simple: any idea that is not your own original thought requires a citation. This includes direct quotations, paraphrased ideas, summarized arguments, statistics, data, definitions, models, theories, and historical facts that are not common knowledge. You do not need to cite widely accepted common knowledge (“World War II ended in 1945”) or your own original analysis—but the line between common knowledge and citable fact is often closer than students expect.

Where Does the Citation Go in a Sentence?

The position of the citation within a sentence varies by citation type. For parenthetical citations, the (Author, Year) goes inside the closing punctuation of the sentence or clause being cited. For narrative citations, the author’s name becomes part of the sentence grammar and only the year appears in parentheses immediately after the name. For block quotes, the parenthetical citation appears after the final punctuation of the quoted passage—the one exception to the rule about citations appearing before the period.

Parenthetical vs. Narrative Citations

APA 7th edition formalizes two equally valid citation formats. Choosing between them is a matter of emphasis and writing rhythm—not a matter of correctness. Strong academic writers use both purposefully within a single paper.

Parenthetical Citation: Format and Rules

In a parenthetical citation, both author and year are inside the parentheses, separated by a comma. The parentheses close before the sentence period. Use an ampersand (&) between multiple authors inside parentheses—never the word “and.”

Narrative Citation: Format and Rules

In a narrative citation, the author’s last name is a grammatical part of your sentence. The year follows immediately in parentheses. If you are also quoting directly, the page number appears in a second set of parentheses after the closing quotation mark. Use the word “and” (not &) between co-authors in narrative format.

When to Use Each Format: A Strategic Guide

Neither format is superior—the choice is about rhetorical intent. Use narrative citations when you are engaging critically with a specific author’s perspective, contrasting two researchers’ views, or reviewing literature where the scholar’s identity adds meaning (“While Smith (2018) argues X, Jones (2020) contends Y…”). Use parenthetical citations when you are presenting established facts or synthesizing multiple sources, where the ideas matter more than who said them. Varying between both formats also improves the readability and flow of your prose.

Author Number Rules: The Complete “et al.” Guide

The number of authors on a source determines exactly how you format the citation. APA 7th edition simplified these rules significantly compared to APA 6—understanding the current rules precisely will prevent the most common citation errors.

One Author

Always cite the author’s last name and year, every time you cite the source. No variations.

Two Authors

Always cite both authors, every time. Use an ampersand (&) inside parentheses; use the word “and” in narrative citations.

Three or More Authors: The “et al.” Rule

This is the biggest change from APA 6 to APA 7. In APA 7th edition, any source with three or more authors is shortened to the first author’s last name followed by “et al.” from the very first citation. APA 6 required listing all authors (up to five) at first mention—APA 7 eliminates this distinction entirely.

Distinguishing Sources That Share an “et al.” Abbreviation

A problem arises when you have two or more different sources that shorten to the same (First Author et al., Year) citation. APA 7 has a clear resolution: include as many additional authors as needed to distinguish the two citations, then add “et al.” For example, if you have both Smith, Jones, Williams (2020) and Smith, Jones, Brown (2020), you would cite them as (Smith, Jones, Williams, et al., 2020) and (Smith, Jones, Brown, et al., 2020).

Group or Institutional Authors

When the author is an organization, government agency, association, or corporation, use the full organization name initially. If the organization has a well-known abbreviation, you may define it in brackets at the first citation and use the abbreviation in all subsequent citations.

Author Number Rules: Quick Reference Table

Paraphrases, Short Quotes, and Block Quotes

The way you incorporate source material—summarizing in your own words versus copying directly—changes the citation format. APA 7 treats these three cases differently.

Paraphrases and Summaries

A paraphrase restates an author’s specific idea in your own words, closely tracking the original meaning. A summary condenses a broader argument or entire work into your own words. Both require a citation. Page numbers are not required for paraphrases and summaries in APA 7, but the APA Manual (7th ed., p. 270) encourages them—especially for long or complex texts—to help readers locate the exact passage.

Short Direct Quotes (Fewer Than 40 Words)

A direct quote copies the author’s words verbatim. Short quotes of fewer than 40 words are incorporated into your running text inside double quotation marks. You must include a page number (or paragraph number for sources without pages, using “para.”). The page number follows the year inside the parenthetical, or appears in a separate parenthetical after the closing quotation mark in a narrative citation.

Making Changes to a Direct Quote

Sometimes you need to alter a direct quote slightly for grammatical fit, clarity, or to omit irrelevant material. APA 7 has specific conventions for these modifications:

• Omitting words: Use an ellipsis (. . .) with a space before and after each dot to indicate where words were removed. Use four dots when the omission follows a complete sentence (. . . .).
• Adding or changing words: Enclose your addition or change in square brackets: “The intervention [aerobic exercise] was found to be effective.”
• Emphasizing words: Add italics to the words you want to stress, then note “(emphasis added)” after the page number: (Lee, 2021, p. 22, emphasis added).
• Correcting errors in the original: Insert [sic] in italics immediately after the error to signal it is in the original: “The pateints [sic] reported improvement.”

Block Quotes (40 Words or More)

A direct quote of 40 words or more must be formatted as a block quote. Block quotes have specific structural requirements that differ from all other citation formats—and the citation position is the one major exception to the rule that citations precede the sentence period.

• Begin the block quote on a new line, immediately after your introductory sentence.
• Indent the entire block 0.5 inches (one tab stop) from the left margin.
• Do not use quotation marks around block quotes.
• Double-space the block quote like the rest of the paper.
• Place the parenthetical citation after the final punctuation of the quote—the only case where the citation follows rather than precedes the period.

Handling Missing Information

Real-world sources frequently lack standard identifying information. APA 7 provides clear substitution rules for each scenario.

No Author

When a source has no identified individual or organizational author, use the first few words of the title in the author position. Apply the same formatting rules as you would in the reference list: italicize titles of standalone works (books, reports, whole websites), and use “quotation marks” for titles of parts within a larger work (articles, chapters, web pages within a site).

No Date

When a source has no publication date—common for many websites and some government documents—use the abbreviation n.d. (for “no date”) in the year position.

No Page Number

Direct quotes from sources without page numbers—websites, ebooks with reflowable text, YouTube videos, podcasts—require a locator alternative. APA 7 provides several options in order of preference:

• Paragraph number: Count paragraphs from the beginning of the document. Use “para.” followed by the number: (Smith, 2020, para. 4)
• Heading and paragraph: Use the section heading (shortened if long) plus the paragraph number within that section: (Smith, 2020, Discussion section, para. 2)
• Timestamp: For audio and video sources, use the timestamp: (Smith, 2020, 14:32)
• Slide number: For PowerPoint or slide presentations: (Smith, 2020, slide 7)

No Publisher, No Volume/Issue, or Other Missing Elements

Missing publication elements are handled primarily in the reference list entry rather than the in-text citation—the in-text citation only ever needs author and year (plus page for quotes). For example, if a book has no publisher listed, you simply omit the publisher from the reference list entry but the in-text citation remains (Smith, 2020) unchanged.

Special Citation Cases

Citing Multiple Works in One Parenthesis

When multiple sources support the same idea, list them all in a single parenthetical. Separate them with semicolons and arrange them in alphabetical order by first author’s last name. This alphabetical ordering matches the arrangement in your reference list and signals a thorough, organized literature review.

Citing Multiple Works by the Same Author

If you cite two or more works by the same author published in different years, list the years in chronological order separated by commas within a single parenthetical: (Smith, 2018, 2021). If two works by the same author were published in the same year, add lowercase letters after the year—a, b, c—both in the citation and in the reference list: (Smith, 2021a, 2021b).

Secondary Sources (“as cited in”)

A secondary source citation—sometimes called an indirect citation—occurs when you cite an author (the original source) that you encountered being quoted or described inside a different article or book (the secondary source you actually read). APA 7 strongly discourages over-reliance on secondary sources because you cannot verify the accuracy of the original quotation. Always attempt to locate and read the original work. When that is genuinely impossible, format the citation as follows:

• Name the original author in your sentence or in the citation.
• Add “as cited in” before the secondary source’s author and year.
• Include only the secondary source (the one you read) in your reference list—not the original.

Personal Communications

Personal communications include emails, text messages, phone conversations, personal interviews, letters, and direct messages on social media—any communication that is not formally published and cannot be retrieved by your reader. Because personal communications are not retrievable, they are cited only in-text and do not receive a reference list entry. Include the communicator’s initials and last name, the type of communication, and the full date.

Classical Works and Religious Texts

For works from antiquity—including ancient Greek and Roman texts, the Bible, the Quran, and similar texts—APA 7 uses a modified format. Cite the original publication date (if known) followed by the translation or version date: (Aristotle, 350 BCE/2004). For the Bible and other religious texts, include the version used, followed by the year of the version, and include the book, chapter, and verse in place of a page number. Religious texts are only cited in-text—they are not included in the reference list.

Legal Materials (Court Cases, Statutes, Regulations)

Legal documents follow different conventions from standard APA sources. Court cases are italicized; statutes and regulations are not. For court cases, include the case name and year: Brown v. Board of Education (1954). Statutes include the name of the act and the year it was enacted: Americans With Disabilities Act (1990). Consult the Purdue OWL legal citation guide for detailed formatting of regulatory materials, federal registers, and legislative documents.

APA In-Text Citation Examples by Source Type

The in-text citation format is consistent across source types—(Author, Year)—but the corresponding reference list entry varies significantly. Understanding the in-text citation for each source type helps you link citations correctly to their reference list entries.

Journal Article

Book

Book Chapter in an Edited Volume

Website / Webpage

Newspaper or Magazine Article

Report (Government, NGO, Think Tank)

Dissertation or Thesis

YouTube Video or Podcast Episode

Social Media Post

Lecture Notes or Slides Provided by an Instructor

For students completing nursing assignments, psychology papers, sociology essays, or any discipline that uses APA format, our APA formatting and citation service covers every source type to 7th edition standards.

APA 6th vs. APA 7th Edition: Key In-Text Citation Changes

If you’ve used APA 6 before or are working from older guides and textbooks, understanding what changed in APA 7 is essential for avoiding outdated practices that will cost you marks.

Common APA In-Text Citation Mistakes (And How to Fix Them)

Even experienced writers make recurring APA citation errors. Here are the most frequent mistakes and their corrections.

Mistake 1: Using “et al.” for Two Authors

“Et al.” only applies to three or more authors in APA 7. Two-author sources always list both authors—every time.

Mistake 2: Using “and” Inside Parentheses

Inside parentheses, always use the ampersand (&) between co-authors—never the word “and.” The word “and” is reserved for narrative citations where the authors are named in the sentence text.

Mistake 3: Omitting the Page Number for a Direct Quote

Page numbers are mandatory for every direct quote. This is one of the most heavily penalized citation errors because it prevents readers from verifying the exact wording.

Mistake 4: Putting the Block Quote Citation Before the Period

For block quotes, the citation appears after the final period—the opposite of standard parenthetical placement.

Mistake 5: Including a URL in the In-Text Citation

URLs never appear in APA in-text citations. They belong exclusively in the reference list entry. An in-text citation for a webpage is formatted identically to any other source: (Author or Organization, Year).

Mistake 6: Citing the Editor Instead of the Chapter Author

For chapters in edited volumes, cite the chapter author—not the editor of the book—in the in-text citation. The editor appears only in the reference list entry.

Mistake 7: Forgetting to List a Personal Communication in the Text Only

Personal communications appear only in the in-text citation—they do not receive a reference list entry because readers cannot retrieve them. Adding them to the reference list is an error.

Mistake 8: Miswriting “et al.”

Common errors include “et. al”, “et al” (missing the period after al), and “et al.” with italics. The correct form is et al.—no period after “et,” period after “al,” no italics.

Connecting In-Text Citations to Your Reference List

Every in-text citation serves as a pointer to a full reference list entry at the end of your paper. Understanding this relationship helps you build both elements correctly and consistently.

The Matching Rule

The author’s last name and publication year in your in-text citation must exactly match the corresponding reference list entry. Even a small discrepancy—a different spelling, a missing middle initial that changes alphabetical order, or a year that differs between the article’s online first publication and its final print publication—creates a citation that readers cannot locate and may undermine your paper’s credibility.

Alphabetical Order in the Reference List

APA reference lists are arranged alphabetically by the first author’s last name. When you have multiple works by the same author, they are arranged by year (oldest first). When you have multiple works by the same author published in the same year, they are arranged alphabetically by title and assigned a, b, c suffixes. This alphabetical logic should mirror how you sort multiple works in a single in-text parenthetical: alphabetical by first author’s last name, matching the reference list order.

When In-Text Citations Reveal Reference List Problems

Reviewing your in-text citations against your reference list is one of the most effective proofreading strategies available. Each citation should find exactly one reference list entry. If you find a citation without a match, add the reference entry. If you find a reference entry without any in-text citation, either add the citation or remove the reference. Tools like Zotero, Mendeley, and EndNote can automate this cross-checking, but they are not infallible—always do a manual check before submission.