Kimble, George H. T.
Tropical Africa volume 2 / 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
Kimble, George H.T.
Tropical Africa volume 1 / George H.T. Kimble
The Twentieth Century Fund, 1960
 Buku Teks SO
Dean, Vera Micheles
Builders of emerging nations
Rinehart and Winston, 1961
 Buku Teks SO
Beeby, C. E.
The Quality of education in developing countries
Harvard University Press, 1966
 Buku Teks