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2. Alexander, C., S. Ishikawa, M. Silverstein, M. Jacobson, I. Fiksdahl-King, and S. Angel. 1977. A Pattern Language: Towns, Buildings, Construction. New York: Oxford University Press.
3. Anon. 1979. Streets Ahead. London: Design Council in association with the Royal Town Planning Institute.
4. Anon. 1980. The Design of Urban Space. London: The Architectural Press.
5. Anon. 1997. The Zebra, Pelican and Puffin Pedestrian Crossings Regulations and General Directions 1997. London: The Stationery Office Limited.