This document provides an overview of citations and how to properly cite sources. It defines what a citation is and explains that citations are used to give credit to original sources and allow readers to find the source. The document outlines the basic components of in-text citations and bibliographic citations in MLA, APA, and AMA styles. It explains the differences between quoting and paraphrasing and how to format citations within the text and in the reference list for each style. Overall, the document serves as a refresher on the purpose and mechanics of citing sources in academic writing.