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↑Boulenger, George A. (1894) Catalogue of the Snakes in the British Museum (Natural History). Volume II., Containing the Conclusion of the Colubridæ Aglyphæ., British Mus. (Nat. Hist.), London, xi, 382 pp.
↑Duméril, A.M.C., G. BIBRON & A.H.A. DUMÉRIL (1854) Erpétologie générale ou Histoire Naturelle complète des Reptiles. Vol. 7 (partie 1)., Paris, xvi + 780 S.
↑ 5.05.1Baird, 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.
↑ 6.06.1Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (ed.) (2011). "Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist". Species 2000: Reading, UK. Ginkuhà 24 Septyembre 2012.CS1 maint: multiple names: authors list (link) CS1 maint: extra text: authors list (link)