plagiarism
“Using another person's words, syntax, or ideas without giving appropriate credit and documentation. Plagiarism is a serious breach of ethics.” (Everyone's An Author with Readings 1002)
“You owe it to your sources and your readers to give credit for anyone else's ideas or words that you use in your research paper. If you don't, you may be guilty of plagiarism - the act of presenting someone else's ideas as your own."” (Writers Inc. 275)