Gunatilake, H., & Gunaratne, L. L. (2002). Policy options for conserving Sri Lanka's natural forests. Economy and Environment Program for Southeast Asia.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGunatilake, H.Mm, और Leslie L. Gunaratne. Policy Options for Conserving Sri Lanka's Natural Forests. Singapore: Economy and Environment Program for Southeast Asia, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGunatilake, H.Mm, और Leslie L. Gunaratne. Policy Options for Conserving Sri Lanka's Natural Forests. Economy and Environment Program for Southeast Asia, 2002.
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