APA aipamena

(1943). Vol. 15, № 2; The Petroleum Engineer. 1943.

Chicago Style aipamena

Vol. 15, № 2; The Petroleum Engineer. 1943, 1943.

MLA aipamena

Vol. 15, № 2; The Petroleum Engineer. 1943, 1943.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.