APA
Hans D'ORville(ed.), . (1989). The challenges of agricultural production and food security in Africa. New York: African Leadership Forum.
Chicago
Hans D'ORville(ed.), . 1989. The challenges of agricultural production and food security in Africa. New York: African Leadership Forum.
Harvard
Hans D'ORville(ed.), . (1989). The challenges of agricultural production and food security in Africa. New York: African Leadership Forum.
MLA
Hans D'ORville(ed.), . The challenges of agricultural production and food security in Africa. New York: African Leadership Forum. 1989.