Michael Shermer (2011). “The Believing Brain: From Ghosts and Gods to Politics and Conspiracies---How We Construct Beliefs and Reinforce Them as Truths”, p.162, Macmillan
Michael Shermer (2012). “The Believing Brain: From Spiritual Faiths to Political Convictions – How We Construct Beliefs and Reinforce Them as Truths.”, p.122, Hachette UK