1. Sullivan, Harry Stack: Conceptions of Modern Psychiatry. The William Alanson White Psychiatric Foudation. Washington. 1940.
2. Federn, Paul: Ego Psychology and the Psychoses. Basic Books. New York. 1952.
3. Fromm-Reichmann, Frieda: Principles of Intensive Psychotherapy. University of Chicago Press, Chicago. 1950.
4. Rosen, John N.: Direct Analysis; selected papers. Grune & Stratton. New York. 1953.
5. Sechehaye, M. A.: Symbolic Realization: A New Method of Psychotherapy Applied to a Case of Schizophrenia. International Universities Press. New York. 1951.