- ↑ de Boer, J., Defant, M.J., Stewart R. H., Restrepo, J. F., Clark, L. F., and Ramierez A. H., 1988, Quaternary calc-alkaline volcanism in western Panama: Regional variation and implication for the plate tectonic framework: J. South American Earth Sciences, v. 1, p. 275-293.
- ↑ Defant, M. J., Richerson, P.M., de Boer, J. Z., Stewart, R. H., Maury, R. C., Bellon, H., Drummond, M. S., Feiganson, M. D., and Jackson, T. E., 1991, Dacite genesis via slab melting and differentiation: La Yeguada Volcanic Complex, Panama, J. Petrol., v. 32, p. 1101-1142.
- ↑ Defant, M. J., Jackson, T. E., Drummond, M. S., de Boer, J. Z., Bellon, H., Feigenson, M. D., Maury, R. C., and Stewart, R.H., 1992, The geochemistry of young volcanism throughout western Panama and southeastern Costa Rica: An overview: J. Geol. Soc. Lond., v. 149, p. 569-579.
- ↑ Defant, M. J., Clark, L. F., Stewart, R. H., Drummond, M. S., de Boer, J. Z., Maury, R. C., Bellon, H., Jackson, T. E., and Restrepo, J. F., 1991, Andesite and dacite genesis via contrasting processes: the geology and geochemistry of El Valle Volcano, Panama: Contrib. Mineral. Petrol., v. 106, p. 309-324
- ↑ 5,0 5,1 «Global Volcanism Program | El Valle» (en anglès). [Consulta: 16 abril 2024].