APA aipamena

(1994). Vol. 92, № 16; OiL and Gas journal. 1994.

Chicago Style aipamena

Vol. 92, № 16; OiL and Gas Journal. 1994, 1994.

MLA aipamena

Vol. 92, № 16; OiL and Gas Journal. 1994, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.