Velasco, M. M. (1999). PNOC petrochen park in Bataan declared as special economic zone. Manila Bulletin.
芝加哥风格引文Velasco, Myrna M. "PNOC Petrochen Park in Bataan Declared as Special Economic Zone." Manila Bulletin 1999.
MLA引文Velasco, Myrna M. "PNOC Petrochen Park in Bataan Declared as Special Economic Zone." Manila Bulletin, 1999.
警告：这些引文格式不一定是100％准确.