APA aipamena

Plummer, C. C. (2005). Physical geology. Boston: McGraw-Hill.

Chicago Style aipamena

Plummer, Charles C. Physical Geology. Boston: McGraw-Hill, 2005.

MLA aipamena

Plummer, Charles C. Physical Geology. Boston: McGraw-Hill, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.