Custodio, R. (2000). Laguna de Bay polluted ; loses potential as source of tap water. Manila Times.
Cita Chicago Style (17a ed.)Custodio, Rene. "Laguna De Bay Polluted ; Loses Potential as Source of Tap Water." Manila Times 2000.
Cita MLA (9a ed.)Custodio, Rene. "Laguna De Bay Polluted ; Loses Potential as Source of Tap Water." Manila Times, 2000.
Precaución: Estas citas no son 100% exactas.