Cita APA (7a ed.)

Stebbins, R. C. Amphibians and Reptiles of Western North America. McGraw-Hill.

Cita Chicago Style (17a ed.)

Stebbins, Robert C. Amphibians and Reptiles of Western North America. McGraw-Hill.

Cita MLA (8a ed.)

Stebbins, Robert C. Amphibians and Reptiles of Western North America. McGraw-Hill.