4. Books

Book citations are very similar to article citations, but they are usually a little simpler.  Unless you are actually citing a specific chapter in a book, most book citations will only contain one title.

Tip:  You usually won't use the Publisher (Riverhead Books in the example above) or the Publication location (New York) to find sources, but when you see a publisher in a citation, that is an excellent hint that the source could be a book.