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. 132. ISBN1583331603. OCLC52107453
Laws, D. Richard; O'Donohue, William. 1997. Sexual Deviance: Theory, Assessment, and Treatment. The Guilford Press. New York. str. p. 412. ISBN1572302410. OCLC37180958
