1. ( 1964/ 1951). The origins of totalitarianism. Cleveland and New York: Meridian Books.
2. ( 1995). Gestalt psychology in German culture, 1890-1967. Cambridge: Cambridge University Press.
3. Utopia and Psychological Theory
4. ( 1967). Vitalism. In (Ed.), The encyclopedia of philosophy, vol. 8. New York and London: The Macmillan Company & The Free Press/Collier-Macmillan Ltd.