APA aipamena

(1959). Vol. 31, № 8; The Petroleum Engineer. 1959.

Chicago Style aipamena

Vol. 31, № 8; The Petroleum Engineer. 1959, 1959.

MLA aipamena

Vol. 31, № 8; The Petroleum Engineer. 1959, 1959.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.