Africa speaks / edited by James Duffy and Robert A. Manners
D. Van Nostrand Company, 1961
 Buku Teks SO
Coughlan, Robert
Tropical Africa
Time Incorporated, 1962
 Buku Teks
Women of tropical Africa / edited, Denise Paulme; translated, H.M. Wright
University of California Press, 1963
 Buku Teks
The demography of tropical Africa
by William Brass ... [et al.]
Princenton University Press, 1968
 Buku Teks SO
The population of tropical Africa
edited by John C. Caldwell and Chukuka Okonjo
Longmans, Green, 1968
 Buku Teks SO