The document discusses how to properly use outside sources in writing. It notes that sources should be used to add credibility, provide different perspectives, and show that some ideas are not original to the author. Sources can be used through direct quotes, paraphrases, or summaries. Direct quotes should only be used when necessary, while paraphrases involve restating the source in the author's own words and citing the original work. Summaries condense a source into a shorter overview while still attributing ideas to the original source. The document provides guidance on how to properly quote, paraphrase, cite sources in-text, and examples of different citation styles.