Dyfyniad APA

Matthews III, W. H. (1969). Volcanses and earthquakes. Harvey House.

Dyfyniad Arddull Chicago

Matthews III, William H. Volcanses and Earthquakes. New York: Harvey House, 1969.

Dyfyniad MLA

Matthews III, William H. Volcanses and Earthquakes. Harvey House, 1969.

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