Chicago Style Guide 17th Edition: Book with more than three authors

Reference: First Author Last name, First name, remaining authors’ First name Last name. Title: Subtitle. Edition. Place of Publication: Publisher, Year of publication.

Example:

De la Bédoyère, Camilla, Ihor Holubizky, Julia Kelly, Michael Kerrigan, James Mackay, William Matar, Tom Middlemos, Michael Robinson, and Iain Zaczek. A Brief History of Art. London: Flame Tree Publishing, 2006.

In-Text Citation: Use a superscript number (like this: ¹) in the text at the place where you are indicating that you are citing from a source.

Example:

The theory that the Renaissance marked a radical break with previous history is now discounted by many, notably by Sadie Hawkins in her book The Myth of the Renaissance.³

Footnote: #. First author First name Last name et al., Title: Subtitle (Place of Publication: Publisher, Year of publication), Page.

Example:

3. Camilla de La Bédoyère et al., A Brief History of Art (London: Flame Tree Publishing, 2006), 101.

Note: For more than three authors, list all of the authors in the bibliography; in the footnote, list only the first author, followed by et al., (“and others”). For more than ten authors, list the first seven in the bibliography followed by et al.. List only the first author followed by et al., in the footnote. 

Still unsure what in-text citation and referencing mean? Check here. 

Still unsure why you need to reference all this information? Check here.