1. Path to Liáng Zhi. Seeking an Eternal Philosophy;Yazaki,1994
2. G.H. Brundtland (Chairman), Our Common Future, Oxford University Press, Oxford/New York, 1987.
3. Forsøk for forandring? Alternative veier til et bærekraftig samfunn;Dahle,1997
4. Green Political Thought;Dobson,2000
5. A. Gore, Earth in the Balance. Forging a New Common Purpose, Houghton, Boston/Earthscan, London, 1992, p. 360. (Re-issued by Earthscan in 2000 with a new foreword from the author.)