Gyasi, E. A., & Uitto, J. I. (1997). Environment, biodiversity and agricultural change in West Africa: Perspectives from Ghana. United Nations University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGyasi, Edwin A., और Juha I. Uitto. Environment, Biodiversity and Agricultural Change in West Africa: Perspectives from Ghana. Tokyo: United Nations University Press, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGyasi, Edwin A., और Juha I. Uitto. Environment, Biodiversity and Agricultural Change in West Africa: Perspectives from Ghana. United Nations University Press, 1997.
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