I'm worried about plagiarizing by accident
Build note-taking and citing habits that keep other people's words and ideas clearly marked, including your own earlier work.
In short
Start here, today. Open your notes for one chapter or paper and mark every passage that is copied word for word. Add quotation marks and a page number to any that are missing them. This takes about 25 minutes.
After that, work through these steps. Choose one to jump to it.
Step by step
Tick each step as you finish it. Open a step for the how.
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Keep quotes, paraphrases and your ideas apart in your notes
Use the same system every time: quotation marks and a page number for exact words, a label such as “P:” for paraphrase and “Me:” for your own thinking. Record the source for every note as you write it, not later.
Paraphrase from memory
Read the passage, close it, and write the idea in your own words and sentence structure. Then compare it with the original to check that you haven't kept the same phrasing or changed the meaning. Cite the source either way, because the idea is still theirs.
Use a reference manager
Keep every source in a reference manager such as Zotero, with your notes attached, and insert citations as you write. It's much harder to lose track of where something came from.
Credit more than words
Say where your methods, code, datasets and figures came from, and acknowledge collaborators and anyone who gave substantial help. If you're unsure whether something needs credit, give it.
Be open about reusing your own work
If you reuse text, data or ideas from your earlier papers, assignments or proposal, cite them and say so. If your thesis includes published papers, check what the journal and your co-authors allow. Don't submit the same piece of work for credit in two courses.
Check the rules on AI tools
Policies on generative AI differ between universities, programs and journals, and some require written permission from your supervisor and a statement of how you used it. Find your program's guidance, ask your supervisor before using AI for anything beyond spelling and grammar, and keep a record of what you agreed.
Is this you? Signs to look for
- You've found a sentence in your draft and can't remember whether you wrote it or copied it.
- Your notes mix quotes, paraphrases and your own thoughts with nothing to tell them apart.
- You want to reuse parts of a paper you've published or an assignment from a course.
- You're not sure what your program allows when it comes to AI tools.
Why this happens
Most accidental plagiarism starts well before the writing. It happens in your notes, when a copied sentence loses its quotation marks, or when a close paraphrase is later mistaken for your own words. The fix is mostly about habits at the reading stage, not frantic rewriting at the end.
Academic integrity covers more than copying text. It includes giving credit for ideas, data, code and methods, acknowledging collaborators, and not presenting work as new when it has been submitted or published before. Reusing your own published text without saying so, sometimes called text recycling or self-plagiarism, can be a problem for journals and examiners.
Expectations differ between countries, disciplines and universities, so it's normal to need to learn the local rules. If you studied somewhere with different conventions, or you're writing in a second or third language, it's especially worth asking.
Worth a look (7)
- Academic integrity for thesis students, University of Calgary Faculty of Graduate StudiesPlagiarism, self-plagiarism, collaboration and manuscript-based theses, written for graduate students.
- Academic integrity, University of Calgary Student Success CentreAn example of student-facing support, including workshops and a self-guided course. Your university will have its own.
- Plagiarism and duplicate publication, NatureHow one major publisher defines plagiarism, duplicate publication and text recycling.
- Graduate AI guidelines, University of Calgary Faculty of Graduate StudiesAn example of a graduate school's rules on authorization and disclosure of generative AI use.
- Purdue Online Writing Lab (OWL)Free guides on every part of academic writing, from structuring a paragraph to citing sources. A good first stop when you're unsure how something should look.
- Writing Center Tips & ToolsShort, friendly handouts answer almost any writing question, from literature reviews and abstracts to passive voice and conclusions. Reach for them when one particular thing is tripping you up.
- Writing AdviceShort, practical pages walk you through planning, drafting and revising, with advice on literature reviews, lab reports and using sources. They're easy to dip into when you have one question.
When to bring someone in
Your writing centre can help you practise paraphrasing and citing, and many run academic integrity workshops. A librarian can help with reference managers and citation styles. Ask your supervisor about the norms in your discipline and about AI use. If you're contacted about a possible integrity concern, read your university's policy, reply promptly, and ask your graduate student association or the ombudsperson for advice before any meeting.
Find the right person, or talk to Ify