APA (7th ed.) Citation

World Book, Inc. (2006). World Book's animals of the world. World Book, Inc..

Chicago Style (17th ed.) Citation

World Book, Inc. World Book's Animals of the World. Chicago: World Book, Inc., 2006.

MLA (9th ed.) Citation

World Book, Inc. World Book's Animals of the World. World Book, Inc., 2006.

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