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Volcano World ( http://volcano.und.nodak.edu/vw.html )
Schmidt (1957), U.S. Geological Survey.
Samowitz and Forsyth (1981), U.S. Geological Survey.
Hussong, D.M., and Uyeda, S., 1981, Tectonic processes and the history of the Mariana arc: a synthesis of the results of Deep Sea Drilling Project Leg 60, in Hussong, D.M., and others (eds.), Initial Report of Deep Sea Drilling Project 60, p. 909-929.
Samowitz, I.R., and Forsyth, D.W., 1981, Double seismic zone beneath the Mariana Island arc: Journal of Geophysical Research, v. 86, p. 7,013-7,021.
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Tracy, et al (1964) U.S. Geological Survey.
University of Guam Water and Energy Research Institute of the Western Pacific.
University of Guam Marine Laboratory.
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Uracas Maug Ascuncion Agrigan Pagan Alamagan Guguan Sarigan Anatahan Medinilla