Harding, James H. 1997.
Amphibians and Reptiles of the Great Lakes Region
Ann Arbor, MI: University of Michigan Press. 378 pp.




Harding, James H., and J. Alan Holman. 1992.
Michigan Frogs, Toads, and Salamanders: A Field Guide and Pocket Reference
Bulletin E-2350. East Lansing, MI: Michigan State University Extension. 144 pp.




Harding, James H., and J. Alan Holman. 1997.
Michigan Turtles and Lizards: A Field Guide and Pocket Reference
2d ed. Bulletin E-2234. East Lansing, MI: Michigan State University. 94 pp.




Holman, J. Alan, James H. Harding, Marvin M. Hensley, and Glenn R. Dudderar. 1999.
Michigan Snakes: A Field Guide and Pocket Reference
2d ed., rev. Bulletin E-2000. East Lansing, MI: Michigan State University Extension. 76 pp.




Tekiela, Stan. 2004.
Reptiles and Amphibians of Michigan Field Guide
Cambridge, MN: Adventure Publications. 171 pp. [includes CD of frog and toad calls]