Alegre, R. (1997). Philippine Economic Zone Authority celebrates its 2nd year anniversary. Manila Bulletin.
芝加哥风格引文Alegre, Robert. "Philippine Economic Zone Authority Celebrates Its 2nd Year Anniversary." Manila Bulletin 1997.
MLA引文Alegre, Robert. "Philippine Economic Zone Authority Celebrates Its 2nd Year Anniversary." Manila Bulletin, 1997.
警告：这些引文格式不一定是100％准确.