Hudson, George E. [1942] 1985.
The Amphibians and Reptiles of Nebraska
Reprint ed. Nebraska Conservation Bulletin No. 24. Lincoln, NE: University of Nebraska. 146 pp.




Lynch, John D. 1985.
Annotated Checklist of the Amphibians and Reptiles of Nebraska
Lincoln, NE: Transactions of the Nebraska Academy of Sciences 13: 33-57.