APA引文

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

芝加哥风格引文

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

MLA引文

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

警告：这些引文格式不一定是100％准确.