AndorL.E. (1966). Aptitudes and abilities of the black man in Sub-Saharan Africa.Johannesburg: National Institute for Personnel Research
2.
AndorL.E. (1983). Psychological and sociological studies of the black people of Africa, South of the Sahara, 1960–1975: an annotated bibliography.Pretoria: National Institute for Personnel Research
3.
DubowS. (1981). Mental testing and understanding of race in twentieth century South Africa. In MeadeT.WalkerM., (Eds), Science, medicine and cultural imperialism.London: Macmillan
4.
MuchinskyP.M. (1993). Psychology applied to work: an introduction to industrial and organizational psychology.Pacific Grove: Brooks/Cole
