@book{44984,
	author = {Bates, Bob. and ebrary, Inc.},
	title = {Game design},
	publisher = {Thomson Course Technology,},
	year = {2004.},
	address = {Cambridge, Mass. :},
	edition = {2nd ed.},
	note = {Previous ed.: Roseville, Calif.: Prima Tech, 2001.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10073606}
}