Kimble, George H.T.
Tropical Africa volume 1 / George H.T. Kimble
The Twentieth Century Fund, 1960
 Buku Teks SO
Gay, Phillip T.
Modern south Africa : a volume in the comparative societies series
McGraw-Hill, 2001
 Buku Teks SO
Busia,K.A
The challenge of Africa / K. A. Busia
United States of America, 1962
 Buku Teks SO
Africa and change
edited by Colin M. Turnbull
Kingsport Press, 1973
 Buku Teks SO
Saul, John S.
The crisis in South Africa: class defense, class revolution
Monthly Review Press, 1981
 Buku Teks SO