Stevens, R. (2010). Mineral exploration and mining essentials (1a. ed.). Pakawau GeoManagement Inc.
Chicago Style (17th ed.) ZitazioaStevens, Robert. Mineral Exploration and Mining Essentials. 1a. ed. Pakawau GeoManagement Inc, 2010.
MLA (9th ed.) ZitazioaStevens, Robert. Mineral Exploration and Mining Essentials. 1a. ed. Pakawau GeoManagement Inc, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.