Custodio, R. (2000). Laguna de Bay polluted ; loses potential as source of tap water. Manila Times.
Chicagoスタイル(17版)引用形式Custodio, Rene. "Laguna De Bay Polluted ; Loses Potential as Source of Tap Water." Manila Times 2000.
MLA(9版)引用形式Custodio, Rene. "Laguna De Bay Polluted ; Loses Potential as Source of Tap Water." Manila Times, 2000.
警告: この引用は必ずしも正確ではありません.