APA (7th ed.) Citation

Hammerson, G. A. (1999). Amphibians and reptiles in Colorado (2nd ed.). University Press of Colorado : Colorado Division of Wildlife.

Chicago Style (17th ed.) Citation

Hammerson, Geoffrey A. Amphibians and Reptiles in Colorado. 2nd ed. Niwot, Colo.: University Press of Colorado : Colorado Division of Wildlife, 1999.

MLA (9th ed.) Citation

Hammerson, Geoffrey A. Amphibians and Reptiles in Colorado. 2nd ed. University Press of Colorado : Colorado Division of Wildlife, 1999.