Valencia-Hernández, Á. A., Goyenechea, I., & Castillo-Cerón, J. M. (2007). Notes on scutellation, length, and distribution of rattlesnakes (serpentes: Viperidade: crotalus) in the state of hidalgo, México. Instituto de Ecología, A.C.
Chicago-referens (17:e uppl.)Valencia-Hernández, Ángel Alberto, Irene Goyenechea, och Jesús Martín Castillo-Cerón. Notes on Scutellation, Length, and Distribution of Rattlesnakes (serpentes: Viperidade: Crotalus) in the State of Hidalgo, México. Instituto de Ecología, A.C, 2007.
MLA-referens (9:e uppl.)Valencia-Hernández, Ángel Alberto, et al. Notes on Scutellation, Length, and Distribution of Rattlesnakes (serpentes: Viperidade: Crotalus) in the State of Hidalgo, México. Instituto de Ecología, A.C, 2007.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.
