Phelps has published in a wide variety of marketing and advertising journals and in a few medical journals. He served as editor of volumes 1-3 of Frontiers of Direct & Interactive Marketing Research and as guest-editor of a special issue of the Journal of Advertising Education. He serves on the Editorial Review Boards of the Journal of Public Policy & Marketing, the International Journal of Advertising, the Journal of Current Issues and Research in Advertising, Journal of Interactive Advertising, the Journal of Advertising Education, the Newspaper Research Journal, the International Journal of Internet Marketing and Advertising, theInternational Journal of Integrated Marketing Communications, Communicative Business, an Italian research review on business communication, and the Korean Journal of Advertising Research.