United Nations Centre for Regional Development, Elam, J. J., & Batty, M. (1990). Information systems and technology for urban and regional planning in developing countries: A review of UNCRD's research project. United Nations Centre for Regional Development.
Cita Chicago (17th ed.)United Nations Centre for Regional Development, Joyce J. Elam, i Michael Batty. Information Systems and Technology for Urban and Regional Planning in Developing Countries: A Review of UNCRD's Research Project. Nagoya: United Nations Centre for Regional Development, 1990.
Cita MLA (9th ed.)United Nations Centre for Regional Development, et al. Information Systems and Technology for Urban and Regional Planning in Developing Countries: A Review of UNCRD's Research Project. United Nations Centre for Regional Development, 1990.