 This video explains what to do with works by more than one author, both in your notes and in your bibliography, according to the sixteenth edition of the Chicago Manual of Style. Let's start with what to do if you have less than four authors. When you have two to three authors, list them all. Separate the author's names with commas and include and before the last author's name. In your bibliography, list all author's names as well. Invert the first author's name, their last name goes before their first name, and the second and third author's names are written normally. Next, let's look at what to do when you have four to ten authors. In your notes, only the name of the first author is included, followed by the abbreviation at all. There is no comma after at all. But in your bibliography, list all of the author's names, do not use at all. If you have more than ten authors, in your note, you would only list the first author's name, followed by at all. In your bibliography, list the first seven author's names, followed by at all. For more information about notes bibliography style, check out our videos on how to cite a book, e-book, journal, newspaper or magazine, website, or theses or dissertation. Visit the Munn Libraries website for our Chicago Style Guide and to chat live with library staff. Thanks for watching.