(2013). Petroleum-Zeitschrift.
Cita Chicago (17th ed.)Petroleum-Zeitschrift. Berlin, 2013.
Cita MLA (8th ed.)Petroleum-Zeitschrift. 2013.
Atenció: Aquestes cites poden no estar 100% correctes.
(2013). Petroleum-Zeitschrift.
Cita Chicago (17th ed.)Petroleum-Zeitschrift. Berlin, 2013.
Cita MLA (8th ed.)Petroleum-Zeitschrift. 2013.