Grismer, L. Lee, Ngo van Tri, and Jesse L. Grismer. “A New Species of Insular Pitviper of the Genus Cryptelytrops (Squamata: Viperidae) from Southern Vietnam”. Zootaxa 1715, no. 1 (February 29, 2008): 57–68. Accessed June 7, 2025. https://mapress.com/zt/article/view/zootaxa.1715.1.4.