References for Enguerrand V Seigneur de Guines * de Coucy

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Sir B.Burke: The Dormant and Extinct Peerage. London, 1866
D.Schwennicke: Europäische Stammtafeln, Bd.VII, Tafel 81. Marburg, 1979
A.M.Stokvis: Manuel d'histoire. Amsterdam, 1966
B.Tuchman: The Distant Mirror. Random House, 1978