Butcher, Nancy. 2003. The Strange Case of the Walking Corpse: A Chronicle of Medical Mysteries, Curious Remedies, and Bizarre but True Healing Folklore. Avery. New York. str. p. 133. ISBN1583331603. OCLC52107453
Holmes, Ronald M. Sex Crimes: Patterns and Behavior. Sage Publications. Thousand Oaks. str. p. 79. ISBN0761924175. OCLC48883594
