1. Abraham, K. 1913. A constitutional basis of locomotor activity. In Selected papers, 235–43. New York: Basic Books.
2. Alexander, F., and T. M. French. 1946. Psychoanalytic therapy; principles and application. New York: Ronald Press.
3. Bergmann, M. S. 2000. The Hartmann era. New York: Other Press.
4. Notes on the theory of schizophrenia;Bion W. R.;International Journal of Psychoanalysis,1954
5. Bowlby, J. 1969. Attachment and loss. New York: Basic Books.