APA (7th ed.) Zitazioa

Breckenridge, W. J. (1944). Reptiles and amphibians of Minnesota. University of Minnesota Press.

Chicago Style (17th ed.) Zitazioa

Breckenridge, W. J. Reptiles and Amphibians of Minnesota. Minneapolis: University of Minnesota Press, 1944.

MLA (9th ed.) Zitazioa

Breckenridge, W. J. Reptiles and Amphibians of Minnesota. University of Minnesota Press, 1944.