sunflower effect stop the clock. The Guardian (London). 9 November 2016 [2023-02-20]. (原始内容存档于2021-11-08). Big Ben to be silent for Baroness Thatcher's funeral
(原始内容存档于2010-11-24). Wapshott, Nicholas. Ronald Reagan and Margaret Thatcher: A Political Marriage. New York, NY: Sentinel. 2007: 167. ISBN 978-1-101-21787-0
Counter-Revolution, 1931–1983 (Fontana, 1995), pp. 174–6. John Ranelagh, Thatcher's People: An Insider's Account of the Politics, the Power, and the Personalities