1.
Gamification by Design: Implementing Game Mechanics in Web and Mobile Apps
by Zichermann, Gabe, Cunningha...
ISBN: 9781449397678
List Price: $24.99
OUT OF STOCK
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Gamification Revolution: How Leaders Leverage Game Mechanics to Crush the Competition
by Zichermann, Gabe, Linder, J...
ISBN: 9780071808316
List Price: $27.00
3.
Game-Based Marketing: Inspire Customer Loyalty Through Rewards, Challenges, and Contests
by Zichermann, Gabe, Linder, J...
ISBN: 9780470562239
List Price: $24.95