1. Images of the future: theory and research strategies,1971
2. The Image of the Future: Enlightening the Past, Orientating the Present, Forecasting the Future;Fred Polak,1961
3. The Image of the Future;Fred Polak,1973
4. The Image: Knowledge in Life and Society;Kenneth Boulding,1956
5. The futures of culture/cultures of the future;James Dator,1979