References for Charles 2nd Viscount, 5th Duke, Earl Sackville * Sackville * of Dorset * of Middlesex
Sir B.Burke: Burke's Peerage and Baronetage. London, 1999
Gothaischer genealogischer Hofkalender auf das Jahr 1899. J.Perthes, Gotha, 1898
M.A.H., Marquis de Ruvigny: The Plantagenet roll of the blood royal, Clarence Volume. London, Edinburgh, 1905