Adding references in Google Docs means inserting footnotes, endnotes, or a bibliography that automatically formats and updates as you write

Google Docs has a built-in reference tool that handles the formatting for you — you don't need to memorize citation rules or manually number your sources. When you add a reference, Google Docs places a small number or symbol in your text, links it to the full citation at the bottom of the page or end of the document, and keeps everything in sync if you add or delete references later. You can choose between footnotes (which appear at the bottom of each page), endnotes (which appear at the end of the document), or a separate bibliography page.

The tool works the same way whether you're citing a book, website, journal article, or other source. You pick a citation style — MLA, APA, or Chicago are the most common — and Google Docs formats every reference the same way automatically.

Key Takeaways

  • Footnotes appear at the bottom of the page where you insert them, while endnotes collect at the end of your document, and both are numbered automatically.
  • Google Docs offers three citation styles: MLA, APA, and Chicago, and you can change the style for your entire document at once.
  • To add a reference, place your cursor where you want the number to appear, then use the Insert menu to choose Footnote or Endnote.
  • You can add a bibliography page that pulls all your citations into one formatted list without typing them twice.

How to insert a footnote or endnote

Start by clicking in your document at the exact spot where you want the reference number to appear — usually right after a quote or fact you're citing. Then click the Insert menu at the top of the page. A dropdown list will appear. Click Footnote if you want the citation to appear at the bottom of that page, or click Endnote if you want all citations grouped at the end of your document.

Google Docs will automatically jump your cursor to the reference area and place a number there. Type your full citation in the format you need — for example, "Smith, John. The Title of the Book. Publisher Name, 2020." — then click back in your document where you were writing. The number stays in your text, and your citation stays at the bottom or end. If you add or delete references later, Google Docs renumbers everything for you.

You can hover over any reference number in your text to see a preview of the full citation without scrolling to the bottom of the page. This is useful when you're writing and want to double-check that you cited the right source.

Choosing and changing your citation style

Google Docs defaults to a basic numbered format, but you can switch to MLA, APA, or Chicago style so your citations match what your instructor or publication requires. Click Tools in the top menu, then click Citation style. A small window will pop up showing your three options. Click the one you need.

When you change the citation style, Google Docs reformats every reference in your document at once. If you had written "Smith, John. The Title of the Book. Publisher Name, 2020" in a footnote, switching to APA style might change it to "Smith, J. (2020). The title of the book. Publisher Name." — the content stays the same, but the punctuation and capitalization shift to match the style rules. You don't have to retype anything.

If you're not sure which style your assignment needs, check your syllabus or ask your instructor. MLA is most common in high school and undergraduate humanities classes, APA in social sciences and psychology, and Chicago in history and some business writing.

Adding a bibliography page

A bibliography is a separate page at the end of your document that lists all your sources in one formatted block. Google Docs can build this automatically from all the footnotes and endnotes you've already added, so you don't type your sources twice. Click where you want the bibliography to appear — usually on a new page at the very end of your document. Then click Insert, scroll down to Bibliography, and click it.

Google Docs will create a page titled "Bibliography" and fill it with every source you cited in your footnotes or endnotes, formatted according to your chosen citation style. If you add a new reference later, the bibliography updates automatically. If you delete a reference, it disappears from the bibliography too.

Some assignments ask for a bibliography in addition to footnotes or endnotes, while others ask for one or the other. Check your assignment sheet to see what your instructor wants. If you need to remove the bibliography later, click anywhere on that page and press Delete.

Editing and deleting references

To change a reference you've already written, scroll to the footnote or endnote and click directly on the text. Edit it the same way you'd edit any text in your document — select words, delete them, type new ones. The reference number in your main text stays the same, and the citation updates when ready.

To delete a reference entirely, click the reference number in your main text (not the citation at the bottom) and press Delete. Google Docs will remove both the number in your text and the full citation, then automatically renumber all your other references. This is why using footnotes or endnotes is safer than typing citation numbers by hand — you never have to worry about gaps in numbering.

If you accidentally delete a reference and want it back, press Ctrl+Z (or Cmd+Z on a Mac) when ready to undo. Google Docs will restore the reference and its number.

Moving between your text and your citations

When you're writing and need to check a citation you added earlier, you don't have to scroll all the way to the bottom of the page or end of the document. Hover your cursor over any reference number in your text and a small box will pop up showing the full citation. This preview stays visible as long as your cursor is over the number, so you can read it without leaving your place.

If you need to edit the citation, click on the reference number and Google Docs will jump you directly to that footnote or endnote. Make your changes, then click back in your text to keep writing. You can also click the reference number at the bottom of the page and Google Docs will jump you back to that spot in your text — this is useful if you're reviewing your citations and want to see the context where you used each source.

Troubleshooting common reference problems

If your reference numbers are out of order or have gaps, you probably deleted a reference and Google Docs hasn't updated yet. Click Tools, then Research, then close the research panel. This forces Google Docs to refresh and renumber everything. If that doesn't work, try pressing Ctrl+A (or Cmd+A on a Mac) to select all text, then click somewhere else to deselect — this sometimes triggers a refresh.

If your bibliography page is blank or missing sources, make sure you've actually added footnotes or endnotes to your document. The bibliography only pulls from references you've inserted using the Footnote or Endnote tool — if you typed citations by hand without using that tool, they won't appear in the bibliography. Delete any hand-typed citations and add them as proper footnotes or endnotes instead.

If you're switching between citation styles and the formatting looks wrong, remember that different styles have different rules for capitalization, punctuation, and abbreviations. This is normal and correct — APA capitalizes differently than MLA on purpose. If a citation looks odd, check the style guide for that format to confirm it's right.

Frequently Asked Questions

Can I use footnotes and endnotes in the same document?

No. Google Docs treats them as one system — if you insert a footnote, all your references become footnotes. If you then insert an endnote, Google Docs converts all your footnotes to endnotes. You have to choose one format for the entire document. If you need both, you'll have to use one type and manually add the other kind by typing it in.

What happens to my references if I share my document with someone else?

Your references stay exactly as they are. Anyone you share the document with can see all your footnotes, endnotes, and bibliography, and they can edit them if you give them editing permission. If they add new references, those appear in your document too, and the numbering updates for everyone viewing it.

Can I copy references from one Google Docs document to another?

Yes, but the reference numbers won't carry over. If you copy text that includes a reference number from one document and paste it into another, the number appears but the citation doesn't follow. You'll need to re-add the citation in the new document using the Footnote or Endnote tool. The easiest way is to copy the citation text itself and paste it into a new footnote or endnote.

Do I need to add a bibliography if I'm using footnotes?

It depends on your assignment. Some instructors want only footnotes or endnotes and no separate bibliography. Others want both. Check your assignment sheet or ask your instructor. If you add a bibliography and later find out you don't need it, you can delete that page without affecting your footnotes or endnotes.

Can Google Docs automatically format citations if I paste a URL or ISBN?

Not directly in the footnote tool. However, Google Docs has a separate Research tool (under Tools menu) that can pull citation information from websites and books if you search by URL or title. You can copy that formatted citation and paste it into your footnote or endnote manually. This is faster than typing the full citation yourself, but it requires an extra step.