1. Berry, R. S., and H. Makino. 1974. Energy thrift in packaging and marketing.Technology Review 76(4):32.
2. Cook, E. 1976. Man, energy, society. W. H. Freeman and Company, San Francisco.
3. Evans, D. G. 1991. Energy and greenhouse analysis: Life cycle analysis and packaging seminar. Victoria University of Technology, Melbourne, Australia. November.
4. Hocking, M. B. 1991. Relative merits of polystyrene foam and paper in hot drink cups: Implications for packaging.Environmental Management 15(6):731–747.
5. Newman, P. W. G., and J. R. Kenworthy. 1989. Cities and automobile dependence: A sourcebook. Gower Technical, Aldershot, UK.