Article: Oftentimes, a textbook might be an anthology or collection of work from many authors. In these instances, the editor or editor is given the lead spot in the citation. List the first editor in LastName, FirstName format and any additional editors in FirstName LastName format. Follow one name with the abbreviation "ed." and multiple names with "eds." End with a period.  Doe, John, ed. Rowell, Alex, and Will Hoffman, eds.

What is a summary?
Introduce the editor or editors.