Jusay, A. (2002). How five youngsters became full-fledged environmentalists. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रJusay, Annalyn. "How Five Youngsters Became Full-fledged Environmentalists." Manila Bulletin 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रJusay, Annalyn. "How Five Youngsters Became Full-fledged Environmentalists." Manila Bulletin, 2002.
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