Great Ideas for Teaching Economics includes nine of his submissions. As a Fellow of the Institute for Humane Studies his commentaries were published in The Cleveland Plain Dealer, The Wichita Journal, The Orange County Register, The San Diego Business Journal, and The Justice Times as well as other newspapers. His articles have also been published in The Atlanta Journal and Constitution, The Margin Magazine, Creative Loafing, The LP News, The Gwinnett Daily Post, The Georgia Libertarian, The Gwinnett Daily News, and APC News. Cox is a former member of the Academic Board of Advisors for the Georgia Public Policy Foundation and President of the Georgia Association of Economics and Finance (2001-2002).