1. Jacob Bronowski (1973)The Ascent of Man, Little, Brown and Co., Boston.
2. Samuel Florman (1976)The Existential Pleasures of Engineering, St. Martin's Press, New York.
3. Norton Long, Planning and Politics in Urban Development,Journal of the American Institute of Planners, 25 (6), p. 168.
4. Jerome Delli Priscoli (1978)Public Involvement and Social Impact Assessment: Union Seeking Marriage, Working Paper 78-2, Institute for Water Resources, U.S. Army Corps of Engineers. Fort Belvoir, Virginia 22060, January 1978.
5. Jerome Delli Priscoli (1979) Future thinking: Fad or Necessity,Water Spectrum, Spring 1979, pp. 9–17.