APA aipamena

(1939). Vol. 34, № 1-4; Economic Geology. 1939.

Chicago Style aipamena

Vol. 34, № 1-4; Economic Geology. 1939, 1939.

MLA aipamena

Vol. 34, № 1-4; Economic Geology. 1939, 1939.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.