Anderson, Thomas H., and Leon T. Silver. “An Overview of Precambrian Rocks in Sonora”. Revista Mexicana de Ciencias Geológicas 5, no. 2 (March 26, 2019): 131–139. Accessed April 19, 2025. https://rmcg.geociencias.unam.mx/index.php/rmcg/article/view/1318.