Cita APA (7th ed.)

Rivera, D. PetroEnergy, partners extend West Africa oil concession. The Philippine Star.

Cita Chicago (17th ed.)

Rivera, Danessa. "PetroEnergy, Partners Extend West Africa Oil Concession." The Philippine Star .

Cita MLA (9th ed.)

Rivera, Danessa. "PetroEnergy, Partners Extend West Africa Oil Concession." The Philippine Star, .

Atenció: Aquestes cites poden no estar 100% correctes.