APA (7th ed.) Citation

Sully, K., & Yerril, G. (2011). Lamb says boo! Alligator Books Ltd..

Chicago Style (17th ed.) Citation

Sully, Katherine, and Gail Yerril. Lamb Says Boo! London: Alligator Books Ltd., 2011.

MLA (9th ed.) Citation

Sully, Katherine, and Gail Yerril. Lamb Says Boo! Alligator Books Ltd., 2011.