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Citing Sources

Iona University Libraries Research Guide on Citing Source


The Oxford English Dictionary defines plagiarism as:

"The action or practice of taking someone else's work, idea, etc., and passing it off as one's own; literary theft."


"Plagiarism, n." OED Online, Oxford University Press, June 2022, Accessed 18 July 2022.


Plagiarism occurs by copying another's work or borrowing someone else's original ideas without acknowledging the source.

The expression of original ideas is intellectual property protected by copyright laws.

For tips and videos, visit Turnitin's plagiarism website at
What to cite and how can vary by discipline, but some rules always apply. Visit the appropriate style on this citation guide for more on discipline-specific citation rules.


We recommend contacting your professor first when you have doubts or questions on whether or not something is considered plagiarism.  

Direct Quote

If you take someone else's words, you must use quotation marks or block quotes to indicate that the words are not yours.

Paraphrasing and Summarizing

You use someone else's idea or finding. You must cite the source for that idea, even if you use your own words to describe it.

Take note!

Remember that collaborating with other students while writing a paper is not plagiarism and may be wholly appropriate. Ask your professor for guidance about what kinds of collaboration are allowed for a particular course.

All of the following are plagiarism:
  • turning in someone else's work as your own
  • copying words or ideas from someone else without giving credit
  • failing to put a quotation in quotation marks
  • providing incorrect information about the source of a quotation
  • changing words but copying the sentence structure of a source without giving credit

Credo Video on the Different Types of Plagiarism