Gaya APA

Bethke, B, B, A, P. (1985). Geology and Geochemistry of Epithermal Systems . New Mexico: Society of Economic Geologists.

Gaya MLA

Bethke, Berger., BR, And, P.M.. "Geology and Geochemistry of Epithermal Systems". New Mexico: Society of Economic Geologists, 1985. Text.