Diaz, J. (2005). Small oil firms now part of oil cartel - lawmaker. Philippine Star.
Cita Chicago (17th ed.)Diaz, Jess. "Small Oil Firms Now Part of Oil Cartel - Lawmaker." Philippine Star 2005.
Cita MLA (9th ed.)Diaz, Jess. "Small Oil Firms Now Part of Oil Cartel - Lawmaker." Philippine Star, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.