Dyfyniad APA

Vitt, L. J., & Caldwell, J. P. (2009). Herpetology: An introductory biology of amphibians and reptiles (3rd ed.). Academic press.

Dyfyniad Arddull Chicago

Vitt, Laurie. J., and Janalee P. Caldwell. Herpetology: An Introductory Biology of Amphibians and Reptiles. 3rd ed. London: Academic press, 2009.

Dyfyniad MLA

Vitt, Laurie. J., and Janalee P. Caldwell. Herpetology: An Introductory Biology of Amphibians and Reptiles. 3rd ed. Academic press, 2009.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.