Matthews III, W. H. (1969). Volcanses and earthquakes. Harvey House.
Cita Chicago Style (17a ed.)Matthews III, William H. Volcanses and Earthquakes. New York: Harvey House, 1969.
Cita MLA (9a ed.)Matthews III, William H. Volcanses and Earthquakes. Harvey House, 1969.
Precaución: Estas citas no son 100% exactas.