Cita APA

Stejneger, L. H. 1., & Barbour, T. 1. (1939). A check list of North American amphibians and reptiles (4. edition.). Cambridge: Harvard University Press.

Citación estilo Chicago

Stejneger, Leonhard Hess 1851-1943, y Thomas 1884-1946 Barbour. A Check List of North American Amphibians and Reptiles. 4. edition. Cambridge: Harvard University Press, 1939.

Cita MLA

Stejneger, Leonhard Hess 1851-1943, y Thomas 1884-1946 Barbour. A Check List of North American Amphibians and Reptiles. 4. edition. Cambridge: Harvard University Press, 1939.