APA aipamena

(1949). Vol. 44, № 5-6; Economic Geology. 1949.

Chicago Style aipamena

Vol. 44, № 5-6; Economic Geology. 1949, 1949.

MLA aipamena

Vol. 44, № 5-6; Economic Geology. 1949, 1949.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.