1. Barber, C. R.: Igbo-Ora, a town in transition. Ibadan: Oxford University Press, 1966
2. Brown, G. W., Monck, E. M., Carstairs, G. M., Wing, J. K.: Influence of family life on the course of schizophrenic illness. Brit. J. prev. soc. Med. 16, 55 (1962)
3. Ogunlesi, T. O.: A demographic survey of Ibarapa. J. Nigeria Med. Ass. 2, 173 (1965)
4. Wittkower, E. D.: Perspectives in transcultural psychiatry. Int. J. Psychiat. 8, 811 (1969)
5. Wyatt, J. L., Wyatt, G. B.: An analysis of the patients seen at Igbo-Ora Rural Health Centre, Western Nigeria, during the year from July 1964 to June 1965. Ann. trop. Med. Parasit. 61, 224 (1967)