The population of tropical Africa
edited by John C. Caldwell and Chukuka Okonjo
Longmans, Green, 1968
 Buku Teks SO
Due, John F.
Taxation and economic development in tropical Africa
MIT Press, 1963
 Buku Teks
Doob, Leonard William, 1909-
Communication in Africa: a search for boundaries
Yale University Press, 1961
 Buku Teks
Africa : a foreign affairs reader / Edited by Philip W Quigg
Frederick A. Praeger, 1964
 Buku Teks
Developing Africa's financial services: the importance of high-impact entrepreneurship
edited by Dana T. Redford
Emerald, 2017
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