Kudo, A. M., Jackson, M. E. y Husler, J. W. (1985) «Phase chemistry of recent andesite, dacite, and rhyodacite of volcan Pico de Orizaba, Mexican Volcanic Belt: evidence for xenolitic contamination», Geofísica Internacional, 24(4), pp. 679–689. doi: 10.22201/igeof.00167169p.1985.24.4.1151.