CONCEPTIONS OF PSYCHOSIS IN FOUR EAST AFRICAN SOCIETIES,by ROBERT B. EDGERTON,Los Angeles,U.S.A. American Anthropologist,68:2 (1966),408-25

Levine, R.A. , 'Africa,' in Psychological Anthropology: Approaches to Culture and Personality , F.L.K. Hsu , ed., Homewood, Illinois: Dorsey Press.

Goldschmidt, W. and R. Edgerton , 'A Picture Test of Values', American Anthropologist , 62: (1966), 26-47.

Smartt, C.G.F. , ''Mental Maladjustment in the East African', Journal of Mental Science, 102: (1956), 441-66.