• “I doubt skepticism” Bumper Sticker by CafePress
• Hicks, Stephen Ronald Craig.Explaining Postmodernism: Skepticism and Socialism from Rousseau to Foucault. Phoenix, AZ: Scholargy Pub., 2004.
• Hitchens, Christopher.Letters to a Young Contrarian. [New York]: Basic, 2001.
• Johnson, Donald J.How to Talk to a Skeptic: An Easy-to-follow Guide for Natural Conversations and Effective Apologetics. Bethany House, 2014.
• Klein, Peter, Klein,. “Skepticism.”Stanford University. Stanford University, 08 Dec. 2001.
• Landesman, Charles, and Roblin Meeks. Philosophical Skepticism. Malden, MA: Blackwell Pub., 2003.
• Lewis, C. S. God in the Dock: Essays on Theology and Ethics. Grand Rapids: Eerdmans, 1970.
• Popkin, Richard Henry.The History of Scepticism: From Savonarola to Bayle. Oxford: Oxford UP, 2003.