APA aipamena

(1972). Vol. 70, № 46; OiL and Gas journal. 1972.

Chicago Style aipamena

Vol. 70, № 46; OiL and Gas Journal. 1972, 1972.

MLA aipamena

Vol. 70, № 46; OiL and Gas Journal. 1972, 1972.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.