Bibliography

Webb, R. G. 1984. Herpetogeography in the Mazatlan–Durango region of the Sierra Madre Occidental, Mexico. Seigel, R. A., L. E. Hunt, J. L. Knight, L. Malaret, and N. L. Zuschlag eds., Vertebrate Ecology and Systematics: a Tribute to Henry S. Fitch. Special Publication, Museum of Natural History, University of Kansas no. 10: 217–241. Lawrence,, University of Kansas.