1. Freud, S.: Collected Papers, Vol. 11, The Hogarth Press, London, 1948.
2. Fenichel, Otto: The Psychoanalytic Theory of Neurosis, W. W. Norton & Co., New York, 1945.
3. Kubie, L. S.: Practical and Theoretical Aspects of Psychoanalysis, International Universities Press, Inc., New York, 1950.
4. Cf. 1,: Collected Papers, Vol. 11, The Hogarth Press, London, 1948.
5. Horney, Karen: Our Inner conflicts, W. W. Norton & Co., New York, 1945, 24.