APA (7th ed.) Citation

Child, L., Beaumont, L., & Larson, P. (2008). I completely know about guinea pigs. Dial Books for Young Readers.

Chicago Style (17th ed.) Citation

Child, Lauren, Laura Beaumont, and Paul Larson. I Completely Know About Guinea Pigs. New York: Dial Books for Young Readers, 2008.

MLA (8th ed.) Citation

Child, Lauren, et al. I Completely Know About Guinea Pigs. Dial Books for Young Readers, 2008.