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- Thomas Aquinas, Summa Theologia, Supplement, Q. 80, Art. 4. Available at http://www.newadvent.org/summa/5080.htm#article4, which reproduces the text of the Second and Revised Edition, 1920, literally translated by Fathers of the English Dominican Province.
- Bynum, Caroline Walker. Fragmentation and Redemption: Essays on Gender and the Human Body in Medieval Religion. Zone Books, 1992.
- Murphy, James Jerome. Rhetoric in the Middle Ages: A History of Rhetorical Theory from Saint Augustine to the Renaissance, University of California Press, 1974.
Image: Detail from Manuscrito Valenciennes BM MS 320, f. 45.