Conant, Roger, and Joseph T. Collins. Reptiles and Amphibians. Boston: Houghton Mifflin, 1998.

Dixon, James. Amphibians and Reptiles of Texas. College Station: Texas A&M Press, 1987.

Jaeger, Emund C. A Source-book of Biological Names and Terms. Springfield: Thomas, 1955.

Linzey, Donald. Vertebrate Biology. New York: McGraw-Hill, 1998.

National Geographic. Field Guide to the Birds of North America. Washington: National Geographic, 2002.

Pianka, Eric R. and Laurie J. Vitt. Lizards: Windows to the Evolution of Diversity. Berkeley: University of California Press, 2003.

Pough, Harvey F., R.M. Andrews, J.E. Cadle, M.L. Crump, A.H. Savitzky and K.D. Wells. Herpetology. New Jersey: Prentice Hall, 1991.

Werler, James E. and James R. Dixon. Texas Snakes. Austin: University of Texas Press, 2000.

Whitaker, John O. The Audubon Society Field Guide to North American Mammals. New York: Knopf, 1991