- Hilgard, E. R.: Theories of Learning. New York: Appleton-Century-Crofts, Inc., 1948, p. 326.
- Freud: A General Introduction to Psychoanalysis. New York: Liveright, 1935, p. 299.
- Northrup, F. S. C.: Meeting of East and West. New York: The Macmillan Co., 1946, P. 459.
- Herrick, C. J.: Introduction to Neurology. Philadelphia: W. B. Saunders, 1931, p. 18.
- Fulton, J. F.: Physiology of the Nervous System. New York: Oxford University Press, 1943, pp. 46–47.
- French, Thomas M.: A Clinical Study of Learning in the Course of a Psychoanalytic Treatment. This QUARTERLY, V, 1936, pp. 148–194.
The Psychoanalytic Quarterly
Volume 19, 1950 - Issue 3