APA-ийн эшлэл(7 дахь хэвлэлт)

Duncan, E. R. (2012). A Role for the University of Ife in Increasing Agricultural Production. Obafemi Awolowo University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Duncan, E. R. A Role for the University of Ife in Increasing Agricultural Production. Obafemi Awolowo University Press, 2012.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Duncan, E. R. A Role for the University of Ife in Increasing Agricultural Production. Obafemi Awolowo University Press, 2012.