Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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