Cobos, Marlon Cobos, Claudia Nuñez Penichet, and Katiusca Valarezo-Aguilar. “First Record of an American Bullfrog (Lithobates Catesbeianus) Population in Loja, Ecuador”. Reptiles & Amphibians 22, no. 1 (March 1, 2015): 46–48. Accessed June 14, 2025. https://journals.ku.edu/reptilesandamphibians/article/view/14041.