Dixon, J. R., & Hibbitts, T. J. (2013). Amphibians and Reptiles of Texas: With Keys, Taxonomic Synopses, Bibliography, and Distribution Maps (3rd ed.). Texas A & M University Press.

Dixon, James R., and Toby J. Hibbitts. Amphibians and Reptiles of Texas: With Keys, Taxonomic Synopses, Bibliography, and Distribution Maps. 3rd ed. College Station: Texas A & M University Press, 2013.

Dixon, James R., and Toby J. Hibbitts. Amphibians and Reptiles of Texas: With Keys, Taxonomic Synopses, Bibliography, and Distribution Maps. 3rd ed. Texas A & M University Press, 2013.