1. British Medical Journal (1965). Physical disability and crime. 1, 1448–1449.
2. Bull, R. & Clifford, B. (1979). Eyewitness memory. In M.M. Gruneberg & P.E. Norris (eds.), Applied Problems in Memory. London: Academic Press.
3. Bull, R. & Green, J. (1980). The relationship between physical appearance and criminality. Medicine, Science and Law, 20, 79–83.
4. Bull, R. & Stevens, J. (1981). The effects of facial deformity on helping behaviour. Italian Journal of Psychology, 8, 25–33.
5. Cavior, H., Hayes, S. & Cavior, N. (1975). Physical attractiveness of female offenders. In A. Brodsky (ed.), The Female Offender. London: Saga.