1. Biggart, J. Henry: Pathology of the Nervous System. William Wood and Co., Baltimore. 1936.
2. Noyes, Arthur P: Modern Clinical Psychiatry. W. B. Saunders Co Philadelphia. 1935.
3. Hollos, S, and Ferencz, S: Psychoanalysis and the Psychic Disorder of General Paresis. Nervous and Mental disease Publishing Co. New York.
4. Conn, Jacob H.: An examination of the clinico-pathological evidence offered for the concept of dementia præcox as a specific disease entity. Am. J. Psychiat., 22:1039–1082, March, 1934.
5. Elvidge, Arthur R., and Reed, George E.: Biopsy studies of cerebral pathologic changes in schizophrenia and manic-depressive psychosis. Arch. Neurol. and Psychiat., 40:303–306, August, 1938.