Citazione Stile APA (7a Edizione)

University of London. Centre of African Studies, University of London. Centre of Middle Eastern Studies, Allan, J. A., & Barker, G. (1981). The Sahara, ecological change and early economic history. Middle East & North African Studies Press.

Citazione stile Chigago Style (17a edizione)

University of London. Centre of African Studies, University of London. Centre of Middle Eastern Studies, J. A. Allan, e Graeme Barker. The Sahara, Ecological Change and Early Economic History. Outwell, Cambridgeshire: Middle East & North African Studies Press, 1981.

Citatione MLA (8a ed.)

University of London. Centre of African Studies, et al. The Sahara, Ecological Change and Early Economic History. Middle East & North African Studies Press, 1981.