APA (7th ed.) Citation

Elliott, L., Gerhardt, H. C., & Davidson, C. (2009). The frogs and toads of North America: A comprehensive guide to their identification, behavior, and calls. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Elliott, Lang, H. Carl Gerhardt, and Carlos Davidson. The Frogs and Toads of North America: A Comprehensive Guide to Their Identification, Behavior, and Calls. Boston: Houghton Mifflin, 2009.

MLA (9th ed.) Citation

Elliott, Lang, et al. The Frogs and Toads of North America: A Comprehensive Guide to Their Identification, Behavior, and Calls. Houghton Mifflin, 2009.