^Baird, S. F. and C. Girard. (1853) Catalogue of North American Reptiles in the Museum of the Smithsonian Institution. Part 1.-Serpents., Smithsonian Inst., Washington, xvi + 172 pp.
^ abLinnaeus, C. (1766) Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio duodecima, reformata., Laurentii Salvii, Stockholm, Holmiae. 1-532 pp.
^ abBisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (). „Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist”. Species 2000: Reading, UK. Accesat în .Mentenanță CS1: Nume multiple: lista autorilor (link)
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