De Vera-Ruiz, E. DENR gives trash-collecting boats to clean Manila Bay. IN National News. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDe Vera-Ruiz, Ellalyn. "DENR Gives Trash-collecting Boats to Clean Manila Bay. IN National News." Manila Bulletin .
एमएलए (9वां संस्करण) प्रशस्ति पत्रDe Vera-Ruiz, Ellalyn. "DENR Gives Trash-collecting Boats to Clean Manila Bay. IN National News." Manila Bulletin, .
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