Cita APA

Stebbins, R. C. (2003). A field guide to western reptiles and amphibians; field marks of all species in western North America.

Citación estilo Chicago

Stebbins, Robert C. A Field Guide to Western Reptiles and Amphibians; Field Marks of All Species in Western North America. 2003.

Cita MLA

Stebbins, Robert C. A Field Guide to Western Reptiles and Amphibians; Field Marks of All Species in Western North America. 2003.