Poma, Stella. “Darwin’s Observation in South America: What Did He Find at Agua De La Zorra, Mendoza Province?”. Revista de la Asociación Geológica Argentina 64, no. 1 (March 30, 2009): 13-20. Accessed March 28, 2024. https://revista.geologica.org.ar/raga/article/view/1290.