1. Armstrong, D. (1983) Political Anatomy of the Body: Medical Knowledge in Britain in the 20th Century. Cambridge: Cambridge University Press.
2. Ashton, J. and Seymour, H. (1988) The New Public Health. Buckingham: Open University Press.
3. Azjen, I. and Fishbein, M. (1980) Understanding Attitudes and Predicting Behaviour. Englewood Cliffs, NJ: Prentice-Hall.
4. Azjen, I. (1988) Attitudes, Personality and Behaviour. Buckingham: Open University Press.
5. Baggaley, J. (1991) Media Health Campaigns: not just what you say, but the way you say it. In WHO — AIDS Prevention through Health Promotion facing sensitive issues. Amsterdam: World Health Organisation.