Zichermann, Gabe,  1974- <br/><br/>
The gamification revolution :  how leaders leverage game mechanics to crush the competition / 
Gabe Zichermann and Joselin Linder 
 - New York :  McGraw-Hill,  2013 
 - xviii, 235 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780071808316 (hbk.) 0071808310 (hbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social media--Marketing<br/>Internet games--Psychological aspects<br/>Customer loyalty