References for Lady Diana Spencer

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Sir B.Burke: A Genealogical History of the Peerages and Knightages of the British Empire. London, 1953
F. Freytag v.Loringhoven: Europäische Stammtafeln, Band III, Tafel 158. Marburg, 1956 (1964)
D.Schwennicke: Europäische Stammtafeln, Vol. III/2, Tafel 383. Marburg, 1983