1. Alexander, F. (1939). Psychoanalytic study of a case of essential hypertension.Psychosomatic Medicine 1, 139–56.
2. Alexander, F. (1950).Psychosomatic medicine: Its principles and applications. New York: W.W. Norton.
3. Bernard, C. (1926).An introduction to the study of experimental medicine. New York: MacMillan.
4. Cannon, W.B. (1929).Bodily changes in pain, hunger, fear and rage. New York: Appleton-Century-Croft.
5. Darwin, C. (1934).Origin of the species New York: E.P. Dutton.