Willis, J., & Birchall, M. (2001). No biting, Puma! (American ed.). Carolrhoda Books.

Willis, Jeanne, and Mark Birchall. No Biting, Puma! American ed. Minneapolis, Minn.: Carolrhoda Books, 2001.

Willis, Jeanne, and Mark Birchall. No Biting, Puma! American ed. Carolrhoda Books, 2001.