Villas-Alavaren, A. L. MMDA dredges creeks and rivers. Manila Bulletin.
芝加哥风格引文Villas-Alavaren, Anna Liza. "MMDA Dredges Creeks and Rivers." Manila Bulletin .
MLA引文Villas-Alavaren, Anna Liza. "MMDA Dredges Creeks and Rivers." Manila Bulletin, .
警告：这些引文格式不一定是100％准确.