David F. Wells (2008). “The Courage to Be Protestant: Truth-lovers, Marketers, and Emergents in the Postmodern World”, p.55, Wm. B. Eerdmans Publishing
David F. Wells (2008). “The Courage to Be Protestant: Truth-lovers, Marketers, and Emergents in the Postmodern World”, p.167, Wm. B. Eerdmans Publishing