(1969). Vol. 67, № 35; OiL and Gas journal. 1969.
Cita Chicago (17th ed.)Vol. 67, № 35; OiL and Gas Journal. 1969, 1969.
Cita MLA (9th ed.)Vol. 67, № 35; OiL and Gas Journal. 1969, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)