Gunatilake, H. M., & Gunaratne, L. L. (2002). Policy options for conserving Sri Lanka's natural forests. Economy and Environment Program for Southeast Asia.
Citazione stile Chigago Style (17a edizione)Gunatilake, H. M., e Leslie L. Gunaratne. Policy Options for Conserving Sri Lanka's Natural Forests. Singapore: Economy and Environment Program for Southeast Asia, 2002.
Citatione MLA (9a ed.)Gunatilake, H. M., e Leslie L. Gunaratne. Policy Options for Conserving Sri Lanka's Natural Forests. Economy and Environment Program for Southeast Asia, 2002.
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