a) Homosexuality, Heresy and Witchcraft

Bullough, Vern L., "Heresy, Witchcraft and Sexuality", Journal of Homosexuality 1 (1974), pp. 183-201, repr. in Vern L. Bullough: Sex, Society and History, (New York: Science History Publications, 1976)
Points out that because sources often do not distinguish between heresy, witchcraft and homosexuality, it can be difficult to deal with medieval homosexuality.
Goodich, Michael, "Sexual Deviation as heresy in the XIIth-XIVth Centuries", Modernite et Non-conformisme en France a travers les ages: Actes du Colloque organisee par l'Institut d'Histoire et de Civilisation Francaise de L'Universite de Haifa, ed. Myriam Yardeni, Studies in the History of Christian Though 28, (Leiden: E.J. Brill, 1983)
Karlen, Arno, "The Homosexual Heresy", Chaucer Review 6:1 (1971), pp. 44-63
Monter, E. William, "Sodomy and Heresy in Early Modern Switzerland", Journal of Homosexuality 6:1/2 (1980), pp. 41-55, trans. and revision of "La sodomie a l'epoque moderne en Suisse Romande", Annales ESC 29 (1974), pp. 1023-1033
Russell, Jeffrey B., Witchcraft in the Middle Ages, (Ithaca: Cornell UP, 1972)
Monter, E. William, "The Pedestal and the Stake: Courtly Love and Witchcraft", in Becoming Visible: Women in European History eds. Renate Bridenthal & Claudia Koonz, (Boston: Houghton Mifflin, 1977)
Thouzellier, Christine, "Histoire des sectes dans l'occident medieval", Annuaire de L'Ecole Practique des Hautes Etudes Ve section 86 (1978-9), pp. 385-388
A study of the word "bougre" as applied to cathars.
Thouzellier, Christine, "Etude du term bougre, applique aux heretiques cathares", Annuaire de L'Ecole Practique des Hautes Etudes Ve section 87 (1979-80), pp. 419-421

b) Homosexuality, Leprosy and Sickness
Brody, Saul N., The Disease of the Soul, (Ithaca, N.Y.: Cornell UP, 1974) Discusses association of sexuality with leprosy
Bullough, Vern L. & Bonnie Bullough, Sin, Sickness and Sanity: A History of Sexual Attitudes, (New York: 1977)

c) Paedophilia
Eglinton, J.S., Greek Love, (New York: Oliver Layton Press, 1964) Looks at history of "boy-love" in Greece, Rome, Middle ages and present.

d) Bestiality
Brouillard, R., "Bestialite",in Dictionnaire de droit canonique 7 vols., (Paris: Librairie Letouzey et Ane, 1935-65), pp. 793-799
Bestiality was also seen as a "crime against nature" Nothing beats canon lawyers for being blunt.

e) Transvestism
Bullough, Vern L., "Transvestism in the Middle Ages: A Sociological Analysis", American Journal of Sociology 79 (1974), pp. 1381-1394, modified repr. in Vern L. Bullough & James Brundage, Sexual Practices and the Medieval Church, New Concepts in Human Sexuality Series, (Prometheus Books, 1982)
Uses mainly hagiographical evidence.
Bullough, Vern L. and Bonnie Bullogh, Cross-Dressing, Sex, and Gender, (Philadelphia: University of Pennsylvanis Press, 1993)