Montgomery, Homer. “Deposition and Emplacement of Permian Reefs in Sierra Plomosa, Chihuahua, Mexico”. Revista Mexicana de Ciencias Geológicas 21, no. 2 (May 14, 2018): 236–246. Accessed April 30, 2025. https://rmcg.unam.mx/index.php/rmcg/article/view/890.