References for Angus Charles Drogo 12th Duke Montagu * of Manchester

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K.O. du Roveray: Jahresbericht Bildarchiv du Roveray 2002. Hamburg, 200?
Sir B.Burke: A Genealogical History of the Peerages and Knightages of the British Empire. London, 1953
Sir B.Burke: Burke's Peerage and Baronetage. London, 1999