Vettori, A. (2004). Poets of divine love: Franciscan mystical poetry of the thirteenth century. Fordham University Press.
Chicago-referens (17:e uppl.)Vettori, Alessandro. Poets of Divine Love: Franciscan Mystical Poetry of the Thirteenth Century. New York: Fordham University Press, 2004.
MLA-referens (9:e uppl.)Vettori, Alessandro. Poets of Divine Love: Franciscan Mystical Poetry of the Thirteenth Century. Fordham University Press, 2004.
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