00336nam a2200097Ia 4500008004100000020001800041100002100059245011300080260002800193300001700221180315s9999    xx            000 0 und d  a9780071808316  aZichermann, Gabe  cLinder, JoselinaThe gamification revolution :bHow leaders leverage game mechanics to crush the competition  aUSA :b2013cMcGrawHill  av, 235 pages