Purdue OWL: Plagiarism OverviewResearch-based writing in American institutions, both educational and corporate, is filled with rules that writers, particularly beginners, aren't aware of or don't know how to follow. Many of these rules have to do with research and proper citation. Gaining familiarity with these rules, however, is critically important, as inadvertent mistakes can lead to charges of plagiarism, which is the uncredited use (both intentional and unintentional) of somebody else's words or ideas.