Kolla 2013, tr. 718.Lỗi sfn: không có mục tiêu: CITEREFKolla2013 (trợ giúp) Kolla, E.J. (2013). “The French Revolution, the Union of Avignon, and the Challenges of National Self-Determination”. Law and History Review. 31 (4): 717–747. doi:10.1017/S0738248013000448.
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Strayer 1969, tr. 505. Strayer, Joseph R. (1969). “The Crusades of Louis IX”. Trong R. L. Wolff; H. W. Hazard (biên tập). A History of the Crusades. II: The later Crusades, 1189–1311. tr. 486–518.
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