Cita APA (7th ed.)
ebrary, Inc, & Hassan, F. A. (2002). Droughts, food, and culture: Ecological change and food security in Africa's later prehistory. Kluwer Academic/Plenum Publishers.
Cita Chicago (17th ed.)
ebrary, Inc, i Fekri A. Hassan. Droughts, Food, and Culture: Ecological Change and Food Security in Africa's Later Prehistory. New York: Kluwer Academic/Plenum Publishers, 2002.
Cita MLA (9th ed.)
ebrary, Inc, i Fekri A. Hassan. Droughts, Food, and Culture: Ecological Change and Food Security in Africa's Later Prehistory. Kluwer Academic/Plenum Publishers, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.