1. Benedict XVI. 2012, October 7. Apostolic Letter: Proclaiming Saint Hildegard of Bingen, Professed Nun of the Order of Saint Benedict, a Doctor of the Universal Church. Vatican. http://www.vatican.va/content/benedict-xvi/en/apost_letters/documents/hf_ben-xvi_apl_20121007_ildegarda-bingen.html.
2. Bynum, Caroline Walker. 1991. Fragmentation and Redemption: Essays on Gender and the Human Body in Medieval Religion. New York: Zone Books.
3. Caciola, Nancy. 2006. Discerning Spirits: Divine and Demonic Possession in the Middle Ages. Ithaca: Cornell University Press.
4. Cadden, Joan. 1984. It Takes All Kinds: Sexuality and Gender Differences in Hildegard of Bingen’s ‘Book of Compound Medicine’. Traditio 40: 149–174.
5. Elliott, Dyan. 2013. Gender and the Christian Traditions. In The Oxford Handbook of Women & Gender in Medieval Europe, ed. Judith M. Bennett and Ruth Mazo Karras, 21–35. Oxford: Oxford University Press.