References for Archibald 6th Earl Douglas * of Angus

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Sir B.Burke: The Dormant and Extinct Peerage. London, 1866
Sir B.Burke: A Genealogical History of the Peerages and Knightages of the British Empire. London, 1953
J. Dupont, J. Saillot: Cahiers de Saint-Louis. Nantes, Angers, 1976 etc.
W.K. v.Isenburg: Europäische Stammtafeln, Band II, Tafel 63. Marburg, 1953 (1965)
H. Grote: Stammtafeln. Leipzig, 1877
D.Schwennicke: Europäische Stammtafeln, Vol. II, Tafel 87. Marburg, 1984