(eBook PDF)Gamification by Design: Implementing Game Mechanics in Web and Mobile Apps by Gabe Zichermann $9.99 Add to Cart
(eBook PDF)Sociology Project 3.0, The: Introducing the Sociological Imagination [RENTAL EDITION] 3rd Edition by unknown author $25.99 Add to Cart
(eBook PDF)Understanding Psychology 12th Edition by Charles G. Morris Professor Emeritus , Albert A. Maisto $39.90 Add to Cart
