BioStor
Crotalus intermedius TROSCHEL 1865
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 | The amphibians and reptiles of Michoacán, México W E Duellman (1961) University of Kansas Publications. Museum of Natural History 15: 1-148 |
 | Evolution of the pit vipers Bayard H Brattstrom (1964) Transactions of the San Diego Society of Natural History 13: 185-268 |
 | The salamanders of Guerrero, Mexico, with descriptions of five new species of Pseudoeurycea (Caudata: Plethodontidae) Kraig Adler (1996) Occasional Papers of the Museum of Natural History University of Kansas 177: 1-28 |