The website also offers a citation quick guide that has many examples.
According to the Merriam-Webster Online Dictionary, to "plagiarize" means
In other words, plagiarism is an act of fraud. It involves both stealing someone else's work and lying about it afterward.
When do I need to cite?
Whenever you borrow words or ideas, you need to acknowledge their source. The following situations almost always require citation:
A "citation" is the way you tell your readers that certain material in your work came from another source. It also gives your readers the information necessary to find that source again, including:
What is Plagiarism? (n.d.) Retrieved August 15, 2010, from <https://www.plagiarism.org/article/what-is-plagiarism>