1. A. H. Leighton, An Introduction to Social Psychiatry (Springfield, Illinois: Charles C. Thomas. 1960) p. 32.
2. B. P. Dohrenwend and B. S. Dohrenwend, ‘The Problem of Validity in Field Studies of Psychological Disorder’, International Journal of Psychiatry, 1 (1965) pp. 585–607.
3. Lord Taylor and S. Chave, Mental Health and Environment (London: Longmans, 1964) p. 131.
4. M. Shepherd and others, Psychiatric Illness in General Practice (Oxford: Oxford University Press, 1966) p. 95.
5. H. Warren Dunham, ‘Community Psychiatry: the Newest Therapeutic Bandwagon’, International Journal of Psychiatry, 1 (1965) pp. 553–66.