@book{11269,
	author = {Heath, Christian, and Luff, Paul. and ebrary, Inc.},
	title = {Technology in action},
	publisher = {Cambridge University Press,},
	year = {2000.},
	series = {Learning in doing},
	address = {Cambridge, U.K. ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10014977}
}