書中2005年的測值和估值: "*" 理查德·林恩和塔圖·万哈宁的估值. Lynn, R. and Vanhanen, T. (2006). IQ and Global Inequality. WashingtonSummit Publishers: Augusta, GA. ISBN 1-59368-025-2
(September 2011) 2012 Nuclear Security Summit and South Korean Nuclear Interests by Fred McGoldrick (March 2012) From Washington to Seoul: Advancing Nuclear Security
24: Transcripts from Malta Summit (页面存档备份,存于互联网档案馆) David Hoffman, "Bush and Gorbachev Hail New Cooperation", Washington Post (December 4, 1989) (页面存档备份,存于互联网档案馆)
conditions on and around Mount Washington (页面存档备份,存于互联网档案馆) 19th-century paintings of Mount Washington Computer generated summit panoramas North (页面存档备份,存于互联网档案馆)