1. Horney, K.: Neurosis and Human Growth: The Struggle Toward Self-Realization. New York: W. W. Norton, 1950.
2. Erikson, E.: The Problem of Ego Identity. New York: W. W. Norton, 1958.
3. Goffman, E.: Stigma: Notes on the Management of Spoiled Identity. Englewood Cliffs, New Jersey: Prentice-Hall Spectrum Books, 1963.
4. Laing, R.: The Divided Self. London: Tavistock Publications, Ltd., 1960.
5. Freud, S.: New Introductory Lectures on Psychoanalysis. New York: W. W. Norton, 1933.