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- [S336465] Eleanor of Aquitaine: A Life, Alison Weir, (New York: Ballantine iBook, 2008), 259.
- [S336466] Medieval France: An Encyclopedia, John Bell Henneman, Jr., Lawrence Earp, William W. Kibler, Grover A. Zinn, (New York: Garland Publishing Inc., 1995), "Champagne", 190.
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