Fields, Tim <br/><br/>
Social game design :  monetization methods and mechanics / 
Tim Fields, Brandon Cotton 
 - Waltham, MA. :  Morgan Kaufmann,  2012 
 - xv, 262 p. :  ill ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780240817668 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer games--Design