1. Environmental Education: Report of the Council for Environmental Education. London, The Countryside Inn, 1970.
2. Environmental Situation, The Belgrade Charter: A Global Framework for Environmental Education, produced and adopted at the International Environmental Education Workshop at Belgrade, 13-22 October 1975.
3. Report on the AMIC-UNEP Workshop on Media and the Environment, Amic, Singapore, May 1980.
4. Trends in Environmental Education, Paris, Unesco, 1977.
5. Aldrich, J.L. et. al. “A Reading list on Man and His Environments.”The Journal of Environmental Education, vol.4, no. 1, 1972.