MLA Page Format and In-Text Citations: A Practical Walkthrough

When you write a research paper in MLA style, two things matter most for everyday work: how the page looks and how you credit your sources inside the text. Neither is complicated, but small habits make the difference between a paper that reads as careful and one that reads as rushed. This guide walks through both, with examples you can copy and adapt.

Setting up the page

MLA format is plain on purpose. The goal is a clean, readable document, not decoration.

• Use a standard, legible font (Times New Roman 12 pt is the usual choice).
• Double-space the entire paper, including the heading and the Works Cited list.
• Keep one-inch margins on all four sides.
• Indent the first line of each paragraph half an inch.

In the top left of the first page, stack four lines: your name, your instructor’s name, the course, and the date. Then center your title on the next line. Do not bold, underline, or enlarge it.

Maria Lopez
Professor Adeyemi
English 102
13 May 2026

                  Birdsong and Habitat Loss

The running header

Every page carries a header in the top right corner: your last name, a space, then the page number. Word processors place this in the header area so it repeats automatically, half an inch from the top.

It looks like this on page three:

                                              Lopez 3

That is the whole rule. No “page,” no “p.,” no punctuation between the name and number. Set it up once in your document’s header settings and you never have to think about it again.

In-text citations: the core idea

An in-text citation is a small signpost. It tells the reader two things: who wrote the source and where in that source your information came from. The reader can then turn to your Works Cited page and find the full details.

The basic shape is the author’s last name and a page number in parentheses, with no comma between them:

Migratory species often time their nesting to local weather patterns (Armstrong 45).

Notice that the period comes after the closing parenthesis, not before. The citation belongs to the sentence, so it sits inside the sentence’s punctuation.

Quoting versus paraphrasing

You will use citations in two situations, and the form shifts slightly depending on how you introduce the source.

Direct quotation. When you use the author’s exact words, put them in quotation marks and add the citation:

One study notes that “many migratory birds nest below ground level for temperature stability” (Armstrong 45).

Paraphrase. When you restate an idea in your own words, you still cite it, because the idea is not yours:

Some birds nest underground to keep their eggs at a steadier temperature (Armstrong 45).

Naming the author in your sentence. If you mention the author by name as you introduce the source, you do not repeat the name in the parentheses. Only the page number is needed:

As Armstrong explains, several species rely on underground nests for warmth (45).

This last move, called a signal phrase, often reads more smoothly than dropping a name into parentheses. It also helps your reader follow whose idea is whose.

A worked example

Here is a short paragraph that blends a paraphrase, a direct quote, and a signal phrase. Watch how the citations stay light and the sentences keep their flow.

Climate shifts are changing where some birds choose to nest. Researchers have found that ground-level nesting offers better insulation against sudden cold snaps (Armstrong 45). Armstrong goes further, arguing that this behavior is “a measurable response to warming springs rather than a fixed instinct” (52). The pattern suggests that nesting choices may keep adapting as local weather changes.

Three citations, three different forms, and the reader can trace every claim. That is the standard MLA paragraphs aim for.

When the source has no page number

Many web pages and digital sources have no page numbers. In that case, give just the author’s name in the parentheses, or use the name in a signal phrase and skip the parentheses entirely. Do not invent a page number, and do not use the URL inside the text.

Online archives have made primary documents far easier to reach (Chen).

If the source has no named author, use a short version of the title instead, in quotation marks for an article or in italics for a longer work.

Common mistakes

• Putting a comma between name and page. Write (Armstrong 45), not (Armstrong, 45).
• Punctuation before the parenthesis. The sentence period goes after the citation, not before it.
• Citing only quotes. Paraphrases need citations too. Borrowed ideas count, even in your own words.
• Repeating the author’s name twice. If the name is in your sentence, leave it out of the parentheses.
• Writing “page” or “pg.” in the header or citation. MLA uses the number alone.
• Mismatched entries. Every in-text name must match a full entry on your Works Cited page. If a reader cannot find the source there, the citation is incomplete.

A quick checklist

Before you submit, run through this short list:

• Header shows your last name and page number, top right, on every page.
• The whole paper is double-spaced with one-inch margins.
• Every quote sits in quotation marks and ends with a citation.
• Every paraphrase carries a citation too.
• No commas between author and page; periods sit after the parentheses.
• Each in-text citation matches a Works Cited entry.

Once these patterns feel routine, MLA stops being a chore and becomes a quiet way to show your reader exactly where your evidence comes from. That transparency is the real point of citation: it lets others check your work and trust your thinking.