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"How do I cite a PDF?" is a very common question, and the answer is that no style has a format for one. PDF describes how a document is stored. The citation depends on what the document is.
Step 1: Identify the Source Type
Open the PDF and look at the first two pages.
| What you see | What it probably is | Cite it as |
|---|---|---|
| Journal name, volume, issue, DOI in the header or footer | Journal article | Journal article |
| Report number, organization logo, executive summary | Report or white paper | Report |
| ISBN, publisher, table of contents | Book or ebook | Book |
| "In" plus editors, page numbers that start above 1 | Chapter in an edited book | Book chapter |
| University name, degree, supervisor | Thesis or dissertation | Dissertation |
| arXiv, SSRN or bioRxiv stamp | Preprint | Preprint |
| Government department, publication number | Government document | Government document |
| Course code, instructor name, slide layout | Lecture slides or handout | PowerPoint or course material |
| Conference name, proceedings title | Conference paper | Conference paper |
If the PDF itself gives no clues, go back to the web page where you found it. The page title, breadcrumb trail and surrounding text usually say what the document is and who published it.
Step 2: Cite That Source Type
The most common case is a report that an organization publishes as a PDF on its website. The worked example is the Intergovernmental Panel on Climate Change's 2023 synthesis report, which has an organizational author, a year and a DOI.
APA (7th Edition)
Organization or Author, A. A. (Year). Title of report (Report No. xxx). Publisher. DOI or URL
Intergovernmental Panel on Climate Change. (2023). Climate change 2023: Synthesis report. https://doi.org/10.59327/IPCC/AR6-9789291691647
In-text: (Intergovernmental Panel on Climate Change [IPCC], 2023), then (IPCC, 2023, p. 12)
The publisher is left out because it is the same as the author. Nothing in the reference says "PDF".
MLA (9th Edition)
Climate Change 2023: Synthesis Report. Intergovernmental Panel on Climate Change, 2023, https://doi.org/10.59327/IPCC/AR6-9789291691647. PDF download.
In-text: (Climate Change 2023 12)
The entry starts with the title because the organization is both author and publisher. "PDF download" is an optional final element. Include it if your instructor wants it or if the format affects what the reader will find, and leave it out otherwise.
Chicago (18th Edition)
Footnote:
- Intergovernmental Panel on Climate Change, Climate Change 2023: Synthesis Report (IPCC, 2023), 12, https://doi.org/10.59327/IPCC/AR6-9789291691647.
Bibliography:
Intergovernmental Panel on Climate Change. Climate Change 2023: Synthesis Report. IPCC, 2023. https://doi.org/10.59327/IPCC/AR6-9789291691647.
Author-date in-text: (IPCC 2023, 12), with the reference list entry beginning "IPCC (Intergovernmental Panel on Climate Change). 2023."
Harvard (Cite Them Right)
Intergovernmental Panel on Climate Change (2023) Climate change 2023: synthesis report. Available at: https://doi.org/10.59327/IPCC/AR6-9789291691647
In-text: (Intergovernmental Panel on Climate Change, 2023, p. 12)
With an ordinary URL instead of a DOI, add (Accessed: 21 September 2026).
IEEE
[1] Intergovernmental Panel on Climate Change, "Climate change 2023: Synthesis report," IPCC, Geneva, Switzerland, 2023, doi: 10.59327/IPCC/AR6-9789291691647.
In-text: [1], or [1, p. 12]
For a report without a DOI, the IEEE Reference Guide's online report format ends with: Accessed: Sep. 21, 2026. [Online]. Available: URL
Page Numbers in PDFs
A PDF usually has real page numbers, which is one advantage over a web page. Two things to watch:
- Use the numbers printed on the pages, not the page count shown by your PDF viewer. A journal article may be printed as pages 737 to 738 while the viewer shows 1 to 2.
- If no numbers are printed, the viewer's page count is acceptable because it is the same for every reader of that file. In APA you can also cite a section heading or paragraph number.
Missing Information
No author. Check the cover, the imprint page, the footer and the document properties (File, then Properties). An organization counts as an author. If there is none, the title moves to the author position.
No date. Check the last page and the footer, where a revision date often sits. The file's "created" date in the document properties is a useful clue but can be wrong, for example when an older document was re-saved. If you rely on it, treat it as approximate: APA writes (ca. 2019).
No title. Use a short description in square brackets in APA, for example [Campus evacuation map].
No stable URL. If the PDF was emailed to you or sits behind a login, think about whether your reader can obtain it. A document that cannot be retrieved may need to be cited as a personal communication (APA) or described in a note. See how to cite personal communication.
Scanned Books and Articles
A scanned chapter or article that your instructor shared is still the original publication. Cite the book or the journal, using the page numbers printed in the scan. The fact that you read a scan does not appear in the citation.
Common Mistakes
- Treating the PDF as a web page and citing the website it was hosted on as the title
- Adding [PDF] or [PDF file] in APA 7
- Using the file name (final_report_v3.pdf) as the title
- Pasting a URL that includes a session ID or a library proxy address
- Citing the PDF viewer's page count when the document has printed page numbers
- Citing a Google search result link instead of the document's own address
Sources for These Formats
- APA Style, "Report by a Government Agency References", "Missing Reference Information" and "DOIs and URLs" (apastyle.apa.org)
- MLA Style Center, guidance on optional elements and on citing a PDF (style.mla.org)
- The Chicago Manual of Style, 18th ed., chapters 13 and 14 (chicagomanualofstyle.org)
- Pears and Shields, Cite Them Right, Harvard sections on reports and web pages
- IEEE Reference Guide, version 3.28.2025, section N, "Reports"
Full style rules: APA, MLA, Chicago, Harvard, IEEE.
