@book{75096,
	author = {Bjork, Staffan. and Holopainen, Jussi. and ebrary, Inc.},
	title = {Patterns in game design},
	publisher = {Charles River Media,},
	year = {c2005.},
	series = {Charles River Media game development series},
	address = {Hingham, Mass. :},
	edition = {1st ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10078503}
}