APA (7th ed.) Citation

Beacham, W., Castronova, F. V., & Sessine, S. (2001). Beacham's guide to the endangered species of North America. Gale Group.

Chicago Style (17th ed.) Citation

Beacham, Walton, Frank V. Castronova, and Suzanne Sessine. Beacham's Guide to the Endangered Species of North America. Detroit: Gale Group, 2001.

MLA (9th ed.) Citation

Beacham, Walton, et al. Beacham's Guide to the Endangered Species of North America. Gale Group, 2001.