
Source: The Rainbow of Mathematics: A History of the Mathematical Sciences (2000), p. 127.
Source: "I Saw Hitler" 1932, p. 28
Source: The Rainbow of Mathematics: A History of the Mathematical Sciences (2000), p. 127.
Source: Killing History: The False Left-Right Political Spectrum and the Battle between the ‘Free Left’ and the ‘Statist Left', (2019), p. 361
2000s, The Real Abraham Lincoln: A Debate (2002), The Right of Secession Is Not the Right of Revolution
“Is the ‘Spectre of Communism’ Still Haunting the World?” https://fee.org/resources/is-the-spectre-of-communism-still-haunting-the-world/, speech entitled “Evenings at FEE” in March 2006. Posted in Foundation for Economic Education (FEE), (December 19, 2008)
1992 Iowa fundraising letter opposing a state equal-rights amendment ("Equal Rights Initiative in Iowa Attacked", Washington Post, 23 August 1992); it is sometimes claimed that this statement appeared in Robertson's 1992 GOP convention speech, but this is not the case (see also transcript http://www.patrobertson.com/Speeches/1992GOPConvention.asp)
Jeff Riggenbach, "Karl Hess and the Death of Politics," http://mises.org/library/karl-hess-and-death-politics-0 ( text http://mises.org/library/karl-hess-and-death-politics) The Libertarian Tradition (6 May 2010).
Vetulai, Jerzy (20 February 2009): Wódka groźniejsza niż egzotyczne ziółka http://www.monar.net.pl/Article8247.html. Gazeta Wyborcza (in Polish).