Cita APA (7a ed.)

Ries, H. (1942). Economic geology (7a. ed.). John Wiley.

Cita Chicago Style (17a ed.)

Ries, H. Economic Geology. 7a. ed. New York: John Wiley, 1942.

Cita MLA (8a ed.)

Ries, H. Economic Geology. 7a. ed. John Wiley, 1942.