Rossman, Douglas. “Morphological Variation in the Striped Water Snake Helicops Trivittatus (Gray, 1849) (Reptilia: Serpentes: Xenodontidae) of Eastern Amazonia”. Boletim do Museu Paraense Emílio Goeldi - Ciências Naturais 5, no. 3 (December 20, 2010): 271-278. Accessed August 20, 2025. https://boletimcn.museu-goeldi.br/bcnaturais/article/view/630.