Nielsen, Waldemar A.
Africa
Atheneum, 1966
 Buku Teks
Africa today
edited by C. Grove Haines
John Hopkins Press, 1956
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Webster, J.B.
History of West African : the revolutionary years 1815 to independence
Frederick A. Praeger, 1967
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Bohannan, Paul
Africa and Africans
The National History Press, 1964
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The demography of tropical Africa
by William Brass ... [et al.]
Princenton University Press, 1968
 Buku Teks