APA (7th ed.) Citation

Mayer, G., & Mayer, M. (2001). Just me in the tub. Golden Books.

Chicago Style (17th ed.) Citation

Mayer, Gina, and Mercer Mayer. Just Me in the Tub. New York: Golden Books, 2001.

MLA (9th ed.) Citation

Mayer, Gina, and Mercer Mayer. Just Me in the Tub. Golden Books, 2001.