Yes, you can quote yourself in a research paper — but you have to cite the prior work the same way you would cite anyone else's. Using your own previously submitted work without citation is called self-plagiarism, and at most US colleges it is a violation of the academic integrity policy even though the words are technically yours. The rule is straightforward: if you are pulling text, data, or ideas from something you wrote before, disclose it and cite it.
PaperDraft is a writing assistant, not a paper generator — the draft is your starting point, not your submission. You are responsible for editing, verifying sources, and following your school's academic integrity policy.
Self-plagiarism catches students off guard because it sounds contradictory — how can you steal from yourself? The reasoning is that each course assignment is supposed to represent new work for that course. Submitting the same paper to two classes, or reusing large chunks of an old paper in a new one without citation, misrepresents the effort. That is what schools care about.
The short rule
Three cases, three answers:
- Published work. If your prior work was published (a journal article, a peer-reviewed conference paper, a book chapter), quote and cite it exactly like any other published source.
- Unpublished prior coursework. If you are reusing text or ideas from a paper you wrote for a different class, cite it as unpublished work and — this is the important part — get permission from your current instructor first.
- Submitting the same paper to two classes. Don't. This is the clearest case of self-plagiarism at almost every US institution, and the only defense is written permission from both professors in advance.
The safest default is to treat anything you wrote previously as if it were written by someone else. Quote it, cite it, or rewrite it from scratch.
When self-citation is normal
Self-citation is common and expected in several situations:
- Graduate students citing their own published work. If you have a prior paper that established a framework or reported data you are building on, citing it is expected.
- Undergrads expanding a prior course paper into a thesis. If your senior thesis grew out of a junior-year seminar paper, cite the earlier version. Most advisors consider this normal and sometimes desirable.
- Reusing your own methodology description. If you ran a similar study before and are using the same protocol, you can reuse the methods description — but cite the original and, in some fields, get permission from the journal or instructor.
- Building on your own unpublished conference talk or poster. Cite it as unpublished work.
In all of these cases, a citation in the text and a full entry in the references list covers you. The problem is not reuse — it is undisclosed reuse.
When it becomes self-plagiarism
The bright-line cases at most US universities:
- Submitting the same paper to two classes without written permission from both instructors.
- Copying large sections verbatim from a prior paper into a new one without citation.
- Reusing the literature review from a past paper as if it were written fresh.
- Presenting old research findings as new, current-semester work.
- Pulling your own unpublished work into a paper and presenting it as original to that assignment.
These cases get treated as academic integrity violations even when no outside author is involved. Turnitin and similar tools flag text matches against a student's own prior submissions in many institutional deployments, so the detection side has caught up.
For the related question of how to handle citing a single source multiple times (including your own prior work cited across multiple sections), see cite same source multiple times.
How to format a self-citation
In APA style, an unpublished or class paper looks like this in the references list:
Lastname, F. (2025). Title of the paper. Unpublished manuscript, Department Name, University Name.
In MLA, it looks like this:
Lastname, Firstname. "Title of the Paper." 2025. Course Name, University Name, student paper.
In Chicago, cite it as an unpublished manuscript with the course context in the note. For the detailed formatting rules in your style of choice, the citation workflow walks through each convention.
In the body, handle it exactly like any other citation — parenthetical or footnote, depending on the style. If you are quoting yourself verbatim, use quotation marks and a page number if available.
The permission step
If you are reusing substantial material from a prior paper, the professional move is to email your current instructor before you start drafting. Say which paper, which sections you plan to reuse, and how much. Ask for permission in writing. Most professors will approve it as long as the new paper genuinely extends the prior work and the reuse is disclosed in the submission.
The email does not have to be long:
Hi Professor X, I wrote a paper last spring in [Course] on [topic]. I would like to extend part of the argument in the paper for your class. Roughly 200 words of the literature review would overlap, cited to the earlier paper. Is that acceptable?
Keep the response. If there is any question later, you want written proof.
What your handbook actually says
Before you rely on general advice, check three places: your university's academic integrity policy, your department's thesis or paper guidelines, and the specific course syllabus. Some departments have stricter rules than the general policy. Some professors allow more latitude than the handbook technically requires. The syllabus wins.
For a broader discussion of formality and conventions in academic writing (of which self-citation is one), see is academic writing formal. The pillar guide to writing a research paper covers integrity conventions across the full drafting process.
Frequently asked questions
Can I turn in the same paper for two classes?
Not without written permission from both professors in advance. Even then, most schools require substantial additional work for the second class. Submitting identical work to two classes is the most common self-plagiarism violation caught.
What if I reused only one paragraph?
Still cite it. There is no minimum quantity that makes undisclosed reuse acceptable. A single quoted sentence from a prior paper gets quotation marks and a citation the same as it would if it came from someone else's work.
Does paraphrasing my own prior work count as self-plagiarism?
If the ideas are from the prior paper, yes — you still need to cite the source, even if the current wording is new. The issue is presenting prior thinking as new thinking for this class.
How does Turnitin handle self-plagiarism?
Many institutional Turnitin deployments check against a student's own prior submissions in the school's repository. Matches against your own past papers are flagged the same as matches against published work.