Duke, J. A. (1987). CRC handbook of agricultural energy potential of developing countries. CRC Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuke, James A. CRC Handbook of Agricultural Energy Potential of Developing Countries. Boca Raton, Fla: CRC Press, 1987.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDuke, James A. CRC Handbook of Agricultural Energy Potential of Developing Countries. CRC Press, 1987.
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