APA (7th ed.) Citation

Duellman, W. E., & Schlager, N. (2004). Grzimek's animal life encyclopedia, Vol. 6: Amphibians (Second ed.). Thomson Gale.

Chicago Style (17th ed.) Citation

Duellman, William E., and Neil Schlager. Grzimek's Animal Life Encyclopedia, Vol. 6: Amphibians. Second ed. Detroit: Thomson Gale, 2004.

MLA (9th ed.) Citation

Duellman, William E., and Neil Schlager. Grzimek's Animal Life Encyclopedia, Vol. 6: Amphibians. Second ed. Thomson Gale, 2004.