References for Archibald Earl Douglas * of Angus and Ormond
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
Sir B.Burke: Burke's Peerage and Baronetage. London, 1999
D.Schwennicke: Europäische Stammtafeln, Vol. III/1, Tafel 161. Marburg, 1984