Cita APA (7a ed.)

Stebbins, R. C., & Cohen, N. W. (1997). A natural history of amphibians (1st pbk. printing.). Princeton University Press.

Cita Chicago Style (17a ed.)

Stebbins, Robert C., y Nathan W. Cohen. A Natural History of Amphibians. 1st pbk. printing. Princeton, N.J.: Princeton University Press, 1997.

Cita MLA (8a ed.)

Stebbins, Robert C., y Nathan W. Cohen. A Natural History of Amphibians. 1st pbk. printing. Princeton University Press, 1997.