Primary references

• Sonnini, C.-N.-S. & Latreille, P.-A. 1802. Histoire Naturelle des Reptiles, avec Figures Déssinnées d'après Nature. 4 volumes: 1, 2, 3, 4. Imprimerie de Crapelet, Chez Deterville libraire: Paris. Reference page. 

Additional references

• Campbell, J.A. & Lamar, W.W. 2004. The venomous reptiles of the Western Hemisphere. Comstock, Ithaca, NY.
• Savage, J.M.; Campbell, J.A. & Lamar, W.W. 2005. On names for Neotropical Rattlesnakes (Reptilia: Serpentes: Viperidae: Crotalus). Herpetological Review 36: 369–371.
• Wüster, W.; Ferguson, J.E.; Quijada-Mascareñas, J.A.; Pook, C.E.; Salomão, M.G. & Thorpe, R.S. 2005. Tracing an invasion: landbridges, refugia and the phylogeography of the Neotropical rattlesnake (Serpentes: Viperidae: Crotalus durissus). Molecular Ecology 14: 1095–1108. PDF

• Carbajal-Márquez, R.A., Cedeño-Vázquez, J.R., Martínez-Arce, A., Neri-Castro, E. & Machkour-M’Rabet, S.C. 2020. Accessing cryptic diversity in Neotropical rattlesnakes (Serpentes: Viperidae: Crotalus) with the description of two new species. Zootaxa 4729(4): 451–481. DOI: 10.11646/zootaxa.4729.4.1 Reference page. 

Links

• Uetz, P. & Hallermann, J. 2022. Crotalus simus. The Reptile Database. Accessed on 20 July 2020.
• Dwyer, Q., Lamar, W., Porras, L.W., Solórzano, A., Sunyer, J. & Chaves, G. 2014. IUCN: Crotalus simus  (Least Concern). The IUCN Red List of Threatened Species 2014: e.T197480A2488426. DOI: 10.2305/IUCN.UK.2014-1.RLTS.T197480A2488426.en