↑ "In London, the revelations from [1989 Soviet defector Vladimir] Pasechnik were summarized into a quick note for the Joint Intelligence Committee. The first recipient of such reports is always Her Majesty, The Queen. The second is the prime minister, who at the time was [Margaret] Thatcher." Hoffman, David E. (Emanuel), The Dead Hand: The Untold Story of the Cold War Arms Race and Its Dangerous Legacy (N.Y.: Doubleday, 1st ed. [1st printing?] (ISBN 978-0-385-52437-7) 2009), p. 336 (author contributing editor & formerly U.S. White House, diplomatic, & Jerusalem correspondent, Moscow bureau chief, & foreign news asst. managing editor for The Wash. Post).
↑ Brock, Michael (September 2004; online edition, January 2008). "William IV (1765–1837)". Oxford Dictionary of National Biography. Oxford University Press. Retrieved 10 October 2008 (subscription required)
1 2 Union Jack, The Royal Household, diarkibkan daripada asal pada 5 November 2015, dicapai 9 May 2011
↑ Royal Standard, Official website of the British Monarchy, diarkibkan daripada asal pada 28 December 2009, dicapai 18 June 2010
