@book{8693,
	author = {Jacob, Evelyn. and ebrary, Inc.},
	title = {Cooperative learning in context},
	publisher = {State University of New York Press,},
	year = {c1999.},
	series = {SUNY series, the social context of education},
	address = {Albany :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10026369}
}