(en) Anthony Zolezzi, The Detachment Paradox: How an Objective Approach to Work Can Lead to a Rich and Rewarding Life, ASM Books, (ISBN978-0-9753157-0-5, lire en ligne)
(en-US) Stuart Elliott, « THE MEDIA BUSINESS: ADVERTISING; 'Gump' Sells, to Viacom's Surprise », The New York Times, (ISSN0362-4331, lire en ligne, consulté le )
(en-US) Stuart Elliott, « THE MEDIA BUSINESS: ADVERTISING; 'Gump' Sells, to Viacom's Surprise », The New York Times, (ISSN0362-4331, lire en ligne, consulté le )