Onwueme, I. C., & Charles, W. B. (1994). Tropical root and tuber crops: Production, perspectives and future prospects. FAO of the United Nations.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रOnwueme, I. C., और Winston B. Charles. Tropical Root and Tuber Crops: Production, Perspectives and Future Prospects. Rome: FAO of the United Nations, 1994.
एमएलए (9वां संस्करण) प्रशस्ति पत्रOnwueme, I. C., और Winston B. Charles. Tropical Root and Tuber Crops: Production, Perspectives and Future Prospects. FAO of the United Nations, 1994.
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