1. Maslow, A. H.: Cognition of Being in the Peak Experiences, J. Genetic Psychol., 1959, 94, 43–66.
2. Maslow, A. H.: Motivation and Personality, Harper, 1954.
3. Deutsch, F. and Murphy, W.: The Clinical Interview (2 vols.), International Universities Press, New York, 1955.
4. Rogers, C.: The Concept of the Fullyfunctioning Person, (Mimeographed).
5. Maslow, A. H.: Creativity in Self-Actualizing People, in: H. H. Anderson, (Ed.), Creativity and Its Cultivation, Harper, 1959.