This document discusses plagiarism and how to properly cite sources. It defines plagiarism as using others' words or ideas without giving proper credit. There are different types of plagiarism, including copying work, improper citation, and passing off others' work as one's own. The document provides guidance on how to avoid plagiarism through summarization, paraphrasing, and quotation with citation. It also reviews citation styles like MLA and APA and how to format in-text citations and reference lists. Good sources are identified as university presses, major publishers, and reputable organizations and media, while personal blogs and Wikipedia are seen as poor sources.