1. Social Violence in Northern Ireland
2. Political violence in Northern Ireland 1969–1977. In: Integration and Division: Geographical Perspectives on the Northern Ireland Problem. and (Eds) Academic Press, London, 1982.
3. The demography of violence. In: Northern Ireland: The Background to the Conflict. (Ed.) Appletree, Belfast, 1983.
4. Northern Ireland: A Time of Choice. Macmillan, New York, 1976.