@book{168668,
	author = {Tyack, David B. and Cuban, Larry. and ebrary, Inc.},
	title = {Tinkering toward utopia},
	publisher = {Harvard University Press,},
	year = {1995.},
	address = {Cambridge, MA :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10318402}
}