You’re a first‑gen sophomore in Sociology, staring at a 2,000‑word paper due Friday, and you’ve just hit a snag: the journal article you’re quoting has four authors, and you’re not sure whether to list all four names or to use “et al.” in the parenthetical citation. The MLA 9th‑edition rule is simple—when a source has three or more authors, the in‑text citation includes only the first author’s last name followed by et al. and, if the source is paginated, the page number. For example: (Garcia et al. 112). That’s the core format you’ll use throughout your paper.
Understanding the “et al.” rule for four authors
Imagine you’re writing about social stratification and you need to reference a study by Patel, Nguyen, O’Connor, and Singh published in Journal of Urban Sociology. In the Works Cited entry you’ll list all four authors, but inside the paragraph you only need the first name and “et al.” because MLA treats three‑plus authors the same way.
The citation format breaks down into three parts:
- First author’s last name – this is the only name you write.
- Et al. – always italicized, with a space before it.
- Page number – include only if you’re quoting or paraphrasing a specific passage; omit if the source has no page numbers (e.g., an online PDF without pagination).
Putting it together, a typical parenthetical looks like this:
(Patel et al. 45)
If the article is unpaginated, you simply write (Patel et al.). The key is consistency: never switch between full author lists and “et al.” for the same source.
Takeaway: Use the first author’s surname + et al. + page number (if any) for any source with three or more authors.
When the citation appears in a signal phrase
Sometimes you’ll introduce a source with a signal phrase, like “Patel et al. argue that…” In that case, the author’s name is already part of the narrative, so you only need the page number in parentheses.
Here’s how it works in practice:
- Signal phrase with “et al.” already present: Patel et al. suggest that neighborhood effects are cumulative (45).
- If you prefer to write out the full list in the signal phrase (rarely necessary), you could say: Patel, Nguyen, O’Connor, and Singh demonstrate… (45). But MLA encourages the shorter “et al.” even in prose.
Notice the difference between the two approaches. The first keeps the citation tight and avoids redundancy; the second can feel clunky, especially when you have multiple citations in a single paragraph.
When you’re quoting directly, the page number is mandatory, even if you’ve already mentioned the authors. For paraphrases, the page number is still recommended for precision, though MLA allows you to omit it if the entire article is being discussed.
Takeaway: In a signal phrase, write the authors (using “et al.”) in the text and place only the page number in parentheses.
Handling page numbers and multiple citations
Suppose you need to cite two different articles, each with four authors, in the same sentence. MLA lets you stack the citations, separating them with a semicolon.
Example:
Recent research shows that social networks influence voting behavior (Garcia et al. 112; Patel et al. 45).
If both sources share the same page range, you still list them separately to avoid confusion. When citing the same source multiple times in a paragraph, you don’t need to repeat the full citation each time—just the author and page number if the context makes it clear which source you’re referencing.
For sources without page numbers, MLA recommends using a paragraph number or section heading if available. In that case, replace the page number with “par. 3” or the heading in brackets:
(Patel et al., par. 3)
When you have a parenthetical citation that already includes a page number and you need to add a second author’s name (e.g., a secondary source), separate the two with a comma:
(Patel et al. 45, quoted in Lee 78)
These nuances keep your citations clear and your paper easy to follow.
Takeaway: Separate multiple citations with semicolons; use paragraph numbers or headings when pages aren’t available.
Common pitfalls and how to avoid them
Even seasoned writers slip up on a few details. Below is a quick reference of mistakes that often crop up with four‑author sources, paired with the correct approach.
| Pitfall | Why it’s wrong | Correct practice |
|---|---|---|
| Listing all four surnames in the parenthetical | Violates the three‑author rule and clutters the text | Use first author + et al. (e.g., (Patel et al. 45)) |
| Omitting “et al.” after the first name | Creates an incomplete citation that readers can’t trace | Always include et al. when three or more authors are present |
| Forgetting the page number on a direct quote | MLA requires a locator for quoted material | Add the page number after “et al.” (e.g., (Patel et al. 112)) |
| Using “et al.” in the Works Cited entry | Works Cited must list every author up to twenty | List all four authors in the bibliography, but not in the in‑text citation |
| Mixing “et al.” with “and” in the same citation | Creates inconsistency and can confuse readers | Choose one style per citation; standard MLA prefers “et al.” alone |
Another subtle issue is the placement of punctuation. The period that ends your sentence comes after the closing parenthesis, not before. So write: (Patel et al. 45). Not: (Patel et al. 45.).
“I kept forgetting the period after the citation and got weird errors in my draft,” says Maya, a junior majoring in Anthropology.
Keeping these points in mind will save you from costly revisions right before the deadline.
Takeaway: Check each citation for the three‑author rule, page numbers, and correct punctuation to avoid common errors.
Quick decision checklist before you hit “Submit”
Before you finalize your paper, run through this short checklist. It’s designed to catch any lingering MLA in‑text citation issues, especially for sources with four authors.
- Identify every source with three or more authors.
- Confirm that each parenthetical uses only the first author’s surname followed by et al..
- Verify that every direct quote includes a page number (or paragraph number if pages are absent).
- Ensure that signal phrases already contain “et al.” and that the parenthetical holds only the page number.
- Check that multiple citations in one sentence are separated by semicolons.
- Look at the final punctuation: the period should follow the closing parenthesis.
- Cross‑reference the Works Cited page to make sure all four authors are listed there.
Running this list takes less than five minutes, but it can mean the difference between a smooth grading experience and a markup full of citation corrections.
Takeaway: Use the checklist to verify every MLA in‑text citation follows the “first author + et al.” rule, includes correct locators, and is punctuated properly.