Cita APA

Duellman, W. E., & Trueb, L. (1994). Biology of amphibians. Baltimore, Md: Johns Hopkins University Press.

Citación estilo Chicago

Duellman, William E., y Linda Trueb. Biology of Amphibians. Baltimore, Md: Johns Hopkins University Press, 1994.

Cita MLA

Duellman, William E., y Linda Trueb. Biology of Amphibians. Baltimore, Md: Johns Hopkins University Press, 1994.