Plagiarism
Plagiarism involves claiming another author's work as your own. Although plagiarism can occur unintentionally when a writer forgets to include quotation marks or a citation, it is most often viewed as academic dishonesty.
A mature student information scientist knows that giving credit is not only the right thing to do, but also strengthens a communication.
Read Key Word: Plagiarism in THE BLUE BOOK by Callison and Preddy, 470-475.