(2000). DENR tags 74 institutes for banned ozone substances. Manila Times.
Cita Chicago (17th ed.)"DENR Tags 74 Institutes for Banned Ozone Substances." Manila Times 2000.
Cita MLA (9th ed.)"DENR Tags 74 Institutes for Banned Ozone Substances." Manila Times, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.