Cameron, M., Spaulding, K. y Cameron, K.L. 1987. A synthesis and comparison of the geochemistry of volcanic rocks of the Sierra Madre Occidental and Mexican Volcanic Belt. Geofísica Internacional. 26, 1 (ene. 1987), 29–84. DOI:https://doi.org/10.22201/igeof.00167169p.1987.26.1.1189.