1. Ali, R.H. (1990) Urban conservation in Pakistan: a case study of the walled city of Lahore, in: The Aga Khan Trust For Culture (Ed.) Architectural and Urban Conservation in the Islamic World, pp. 74-88. Geneva: The Aga Khan Trust for Culture.
2. Butlin, R.A. (1987) Theory and methodology in historical geography , in: M. Pacione (Ed.) Historical Geography: Progress and Prospect, pp. 16-45. London : Croom Helm.
3. Choe, A.F.C. (1975) Urban renewal, in: S. H. K. Yeh (Ed.) Public Housing in Singapore: A Multi-disciplinary Study, pp.97-116. Singapore: Singapore University Press, for Housing and Development Board .
4. Craig, B. (1989) Interpreting the historic scene: the power of imagination in creating a sense of historic place, in: D. L. Uzzell (Ed.) Heritage Interpretation: Volume I: The Natural and Built Environment, pp. 107-112. London and New York: Belhaven Press.