Frota, Jossehan Galúcio da. “New Species of Helicops Wagler, 1830 (Serpentes, Colubridae) from Tapajós River, Amazon Region, Brazil”. Phyllomedusa: Journal of Herpetology 4, no. 1 (June 1, 2005): 61–67. Accessed May 18, 2024. https://revistas.usp.br/phyllo/article/view/42636.