LAMAR, W. W.; SASA, M. A new species of hognose pitviper, genus <i>Porthidium</i>, from the southwestern Pacific of Costa Rica (Serpentes: Viperidae). Revista de Biología Tropical, [S. l.], v. 51, n. 3-4, p. 797–804, 2003. Disponível em: https://revistas.ucr.ac.cr/index.php/rbt/article/view/16051. Acesso em: 25 nov. 2024.