The document discusses incorporating sources into academic writing by quoting, summarizing, and paraphrasing sources. It advises using a SCC structure - signal with a lead-in phrase, cite the source, and comment on the cited idea. Quoting uses the exact words, paraphrasing restates the idea in your own words, and summarizing distills the main idea. Summarizing and paraphrasing help avoid plagiarism by putting others' work in your own words while still giving them credit.