Yap, T. DENR warns against pollution from firecrackers. Manila Bulletin.
Chicago-viite (17. p.)Yap, Tara. "DENR Warns Against Pollution from Firecrackers." Manila Bulletin .
MLA-viite (9. p.)Yap, Tara. "DENR Warns Against Pollution from Firecrackers." Manila Bulletin, .
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