APA (7th ed.) Citation

Sadler, M., & Bollen, R. (1983). It's not easy being a bunny. Beginner Books.

Chicago Style (17th ed.) Citation

Sadler, Marilyn, and Roger Bollen. It's Not Easy Being a Bunny. New York: Beginner Books, 1983.

MLA (8th ed.) Citation

Sadler, Marilyn, and Roger Bollen. It's Not Easy Being a Bunny. Beginner Books, 1983.