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Santos-Barrera, Georgina, Jesús Pacheco, and Gerardo Ceballos. Amphibians and Reptiles Associated with the Prairie Dog Grasslands Ecosystem and Surrounding Areas at the Janos Casas Grandes Complex, Northwestern Chihuahua, México. Instituto de Ecología, A.C, 2008.

Santos-Barrera, Georgina, et al. Amphibians and Reptiles Associated with the Prairie Dog Grasslands Ecosystem and Surrounding Areas at the Janos Casas Grandes Complex, Northwestern Chihuahua, México. Instituto de Ecología, A.C, 2008.