Citazione Stile APA (7a Edizione)

Zim, H. S., & Smith, H. M. (1956). Reptiles and amphibians: A guide to familiar american species. Simons and Schuster.

Citazione stile Chigago Style (17a edizione)

Zim, Herbert S., e Hobart M. Smith. Reptiles and Amphibians: A Guide to Familiar American Species. Nueva York: Simons and Schuster, 1956.

Citatione MLA (9a ed.)

Zim, Herbert S., e Hobart M. Smith. Reptiles and Amphibians: A Guide to Familiar American Species. Simons and Schuster, 1956.