Zichermann, Gabe, 1974- The gamification revolution : how leaders leverage game mechanics to crush the competition / Gabe Zichermann, Joselin Linder - New Delhi : McGraw-Hill Education (India) Private Limited, 2013 xviii, 235 p. : ill; 23 cm. Includes index ISBN: 9781259098550 Rs.520.00 Subjects--Topical Terms: Customer loyalty Dewey Class. No.: 658.4012