(1997). NPC, consortium sign power purchase deal. Manila Times.
Dyfyniad Arddull Chicago"NPC, Consortium Sign Power Purchase Deal." Manila Times 1997.
Dyfyniad MLA"NPC, Consortium Sign Power Purchase Deal." Manila Times, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.