Lewis, C.J. 1996. Stratigraphy and geochronology of Miocene and Pliocene volcanic rocks in the Sierra San Fermín and southern Sierra San Felipe, Baja California, Mexico. Geofísica Internacional. 35, 1 (ene. 1996), 3–25. DOI:https://doi.org/10.22201/igeof.00167169p.1996.35.1.1097.