1. American Psychiatric Association. (1952). Diagnostic and statistical manual of mental disorders (1st ed.). Washington, DC: American Psychiatric Press, Inc.. (Chap. 2).
2. Angst, J. (2002). Historical aspects of the dichotomy between manic-depressive disorders and schizophrenia. Schizophrenia Research, 57, 5–13. (Chap. 2).
3. Baastrup, P. C. (1964). The use of lithium in manic-depressive psychosis. Comprehensive Psychiatry, 5, 396–408.
4. Bleuler, E. (1911/1950). Dementia praecox or the group of schizophrenias. New Yrok: International Universities Press.
5. Cade, J. F. J. (1949). Lithium salts in the treatment of psychotic excitement. Medical Journal of Australia, 36, 349–352.