There are two types of plagiarism:
Deliberate plagiarism is when you present someone else’s work as your own. Whether you’re copy and pasting text from a website, stealing a friend’s paper, quoting without citation, or summarizing unique ideas without giving credit, it’s plagiarism.
Accidental plagiarism happens when writers fail to write complete, correct citations, or when they don’t understand what they must cite. The tips on this sheet should help you uncover citation rules that can help prevent accidental plagiarism.
Both types of plagiarism are serious offences and you are responsible to ensure you give the author, artist, etc. credit.
If you have questions about plagiarism, or you're not sure if you've cited something correctly, ask a librarian and also your instructor.
Give credit whenever you use:
The only time you do not have to give
credit to source material is when it provides you with ‘common knowledge’
Common knowledge refers to facts that can be found in numerous places and are likely to be known by a lot of people. You don’t need to cite sources for these facts.
There is no strict definition of common knowledge – you’ll have to use your own judgment. Can you find the information in many sources? Are a lot of people likely to know it? Then it’s common knowledge.
Quotations are when you use someone's exact words. When you quote, place the passage you are using in quotation marks, and document the source according to a standard documentation style (MLA, APA, Chicago). See the Citations page for information and links to citation assistance.
Paraphrasing means using someone's ideas, but putting them in your own words. This is probably the skill you will use most when incorporating sources into your writing – and it’s the easiest way to accidentally plagiarize. Although you use your own words to paraphrase, you must still acknowledge the source of the information. Think of it as citing the ideas rather than the text.
A paraphrase should contain all of the author's information and none of your own commentary. Even if you have avoided using the author's words, sentence structure, or style, an unattributed paraphrase is plagiarism because it presents another person’s ideas as your own. Be sure to keep your own ideas separate from the ideas you get from another person.