APA aipamena

(2002). Vol. 100, № 49; OiL and Gas journal. 2002.

Chicago Style aipamena

Vol. 100, № 49; OiL and Gas Journal. 2002, 2002.

MLA aipamena

Vol. 100, № 49; OiL and Gas Journal. 2002, 2002.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.