1. Abel, E. L. (1974). Drugs and Behavior. A Primer in Neuropsychopharmacology. New York: John Wiley.
2. Brown, H. (1976). Brain and Behavior. New York: Oxford University Press.
3. Mendels, J. (1973). Biological Psychiatry. New York: John Wiley.
4. Praag, H. M. van (1969). The complementary aspects in the relation between biological and psychodynamic psychiatry. Psychiat. Clin. 2, 307.
5. Praag, H. M. van (1971). The position of biological psychiatry among the psychiatric disciplines. Compr. Psychiat. 12, 1.