(2002). Urban forests make environmental and economic sense. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र"Urban Forests Make Environmental and Economic Sense." Manila Bulletin 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्र"Urban Forests Make Environmental and Economic Sense." Manila Bulletin, 2002.
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