APA (7th ed.) Citation

Shepard, S. (2008). Unbelievable: A pretty little liars novel. HarperTeen.

Chicago Style (17th ed.) Citation

Shepard, Sara. Unbelievable: A Pretty Little Liars Novel. New York: HarperTeen, 2008.

MLA (8th ed.) Citation

Shepard, Sara. Unbelievable: A Pretty Little Liars Novel. HarperTeen, 2008.

Warning: These citations may not always be 100% accurate.