Offemaria, R. (1999). Potable water: The world's most precious commodity. Manila Times.
Chicagoスタイル(17版)引用形式Offemaria, Rodel. "Potable Water: The World's Most Precious Commodity." Manila Times 1999.
MLA(9版)引用形式Offemaria, Rodel. "Potable Water: The World's Most Precious Commodity." Manila Times, 1999.
警告: この引用は必ずしも正確ではありません.