@BOOK{ Book!D - 103421228,
AUTHOR = "/ Katie Salen and Eric Zimmerman",
TITLE = "Rules of play",
LIBRARY= "كتابخانه مركزی و مركز اسناد دانشگاه شهيد چمران",
SUBJECT = "Computer games--Design,Computer games--Programming",
URL = "/book/103421228/Rules-of-play/"}