Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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