Selected general reptile & amphibian reference sources for geographical regions.
Turtles of the United States and Canada (2nd ed.)- Ernst, C. H. and J. E. Lovich
ISBN: 0801891213
Publication Date: 2009
The Amphibians and Reptiles of New York State - Gibbs, J., et al.
ISBN: 0195304446
Publication Date: 2007
Amphibian Declines: The Conservation Status of United States Species - Lannoo, M. J.
ISBN: 0520235924
Publication Date: 2005
Western Reptiles and Amphibians - Stebbins, R.
ISBN: 0395982723
Publication Date: 2003