Williams, C. (1975). TheAgronomy of the Major Tropical Crops. Oxford University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilliams, C.N. TheAgronomy of the Major Tropical Crops. Oxford University Press, 1975.
एमएलए (9वां संस्करण) प्रशस्ति पत्रWilliams, C.N. TheAgronomy of the Major Tropical Crops. Oxford University Press, 1975.
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