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