Grafilo, J. (2001). Manila garbage woes ease as Filipinos learn to recycle. Manila Bulletin.
芝加哥风格引文Grafilo, John. "Manila Garbage Woes Ease as Filipinos Learn to Recycle." Manila Bulletin 2001.
MLA引文Grafilo, John. "Manila Garbage Woes Ease as Filipinos Learn to Recycle." Manila Bulletin, 2001.
警告：这些引文格式不一定是100％准确.