TY  - BOOK
AU  - Fields,Tim
AU  - Cotton,Brandon
TI  - Social game design: monetization methods and mechanics 
SN  - 9780240817668
PY  - 2012///
CY  - Waltham, MA
PB  - Morgan Kaufmann
KW  - Computer games
KW  - Design
N1  - Includes bibliographical references and index
ER  -