Avila-Salinas, Waldo (1991). "Petrologic and tectonic evolution of the Cenozoic volcanism in the Bolivian western Andes". Andean Magmatism and Its Tectonic Setting. Geological Society of America Special Papers. Vol. 265. p. 248. doi:10.1130/SPE265-p245. ISBN0-8137-2265-9. ISSN0072-1077.
"SE 19-10 Arica, Chile; Peru; Bolivia". Latin America, Joint Operations Graphic 1:250,000 [Not for navigational use]. University of Texas. Archived from the original on 4 March 2016. Retrieved 10 April 2016.
web.archive.org
"SE 19-10 Arica, Chile; Peru; Bolivia". Latin America, Joint Operations Graphic 1:250,000 [Not for navigational use]. University of Texas. Archived from the original on 4 March 2016. Retrieved 10 April 2016.
Avila-Salinas, Waldo (1991). "Petrologic and tectonic evolution of the Cenozoic volcanism in the Bolivian western Andes". Andean Magmatism and Its Tectonic Setting. Geological Society of America Special Papers. Vol. 265. p. 248. doi:10.1130/SPE265-p245. ISBN0-8137-2265-9. ISSN0072-1077.