The Power of foursquare: 7 Innovative Ways to Get Your Customers to Check In Wherever They AreCarmine GalloSeptember 21, 2011
The Viral Video Manifesto: Why Everything You Know is Wrong and How to Do What Really WorksStephen Voltz, Fritz GrobeNovember 26, 2012
Loyalty 3.0: How to Revolutionize Customer and Employee Engagement with Big Data and GamificationRajat PahariaMay 28, 2013