APA aipamena

(1974). Vol. 72, № 8; OiL and Gas journal. 1974.

Chicago Style aipamena

Vol. 72, № 8; OiL and Gas Journal. 1974, 1974.

MLA aipamena

Vol. 72, № 8; OiL and Gas Journal. 1974, 1974.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.