[61] Clouston, T. S.: Unsoundness of Mind. 1911.
[62] Mendel, Gregor J.: Versuche über Pflanzen Hybriden. 1865.
[63] Davenport, Charles B.: Heredity in Relation to Eugenics. 1911.
[64] Rosanoff, A. J., and Orr, Florence: A Study of Heredity in the Light of the Mendelian Theory. American Journal of Insanity, October, 1911.
[65] Rosanoff, A. J.: On the Inheritance of the Neuropathic Constitution. New York State Hospitals Bulletin, August 15, 1912.
[66] White, William A.: Outlines of Psychiatry. 1919.
[67] Kraepelin, Emil: Psychiatrie. Eighth edition. Vol. 1. 1909.
[68] Ibid.
[69] Kraepelin, Emil: Psychiatrie. Eighth edition. Vol. 1. 1909.
[70] Kraepelin, Emil: Psychiatrie. Eighth edition. Vol. 1. 1909.