Raamatud Gabe Zichermann
A-Ha! Method: Communicating Powerfully in a Time of Distraction
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Gamification for Product Excellence
Mike Hyzy, Bret Wardle, Gabe Zichermann
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Game-Based Marketing: Inspire Customer Loyalty Through Rewards, Challenges, and Contests
Gabe Zichermann, Joselin Linder
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The Gamification Revolution: How Leaders Leverage Game Mechanics to Crush the Competition
Gabe Zichermann, Joselin Linder
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