APA (7th ed.) Citation

Howell, Henderson, & Rogers. (2006). Animal world. Usborne Pub.

Chicago Style (17th ed.) Citation

Howell, Henderson, and Rogers. Animal World. London: Usborne Pub, 2006.

MLA (8th ed.) Citation

Howell, et al. Animal World. Usborne Pub, 2006.

Warning: These citations may not always be 100% accurate.