Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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