G. S. Hall, Adolescence, vol. i, p. 470.
Goron, Les Parias de l'Amour, p. 45.
A. R. Reynolds, Medical Standard, vol. x, cited by Kiernan, "Responsibility in Sexual Perversion," American Journal of Neurology and Psychiatry, 1882.
R. Burton, Anatomy of Melancholy, Part III, Section II, Mem. II, Subs. II, and Mem. III, Subs. I.