This document defines key terms used when citing sources in MLA style. It explains that an author is the person who created the work, and their name is used last name first when citing. A title refers to the name of the work and is usually italicized. The place of publication is where the book was published. The publisher is the company that produced the work. The copyright date is the year it was published. The medium of publication specifies if it was print, web, etc. It provides an example citation putting these terms together.