Campbell, Jonathan A, and Eric N Smith. “A New Species of Arboreal Pitviper from the Atlantic Versant of Northern Central America”. Revista de Biología Tropical 48, no. 4 (December 1, 2000): 1001–1013. Accessed May 4, 2024. https://revistas.ucr.ac.cr/index.php/rbt/article/view/18993.