1. Notes on societal action;FRIEDMANN;Journal of the American Institute of Planners,1969
2. Urban and Regional Planning, A Systems Approach;MCLOUGHLIN,1969
3. A Systems View of Planning;CHADWICK,1971
4. This trend is discussed in VICKERS, Sir GEOFFREY (1965) The Art of Judgement, Methuen, London, Chap. 10; and SELF, PETER (1972) The State versus man, in ROBSON, WILLIAM A. (ed.) Man and the Social Sciences, Allen & Unwin.
5. The Origins of Modern Town Planning;BENEVOLO,1967