Duncan, E. R. (2012). A Role for the University of Ife in Increasing Agricultural Production. Obafemi Awolowo University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDuncan, E. R. A Role for the University of Ife in Increasing Agricultural Production. Obafemi Awolowo University Press, 2012.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDuncan, E. R. A Role for the University of Ife in Increasing Agricultural Production. Obafemi Awolowo University Press, 2012.
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