A citation is information about a resource. It always includes:
Date of Publication
Citations vary depending on the type of resource. For example, citations of book chapters include the chapter title and book title. Article citations include the article title as well as the journal name.
Why do I need to use citations?
They give credit to a source when you use information in your research.
They provide the information you need to retrieve that resource.
Where can you find citations?
Everywhere! You'll find them in books, articles, and websites. Typical citations include footnotes, bibliographies, works-cited pages, parenthetical references, etc.