@book{35274,
	author = {Liu, Jun, and Hansen, Jette G., and ebrary, Inc.},
	title = {Peer response in second language writing classrooms},
	publisher = {University of Michigan Press,},
	year = {c2002.},
	address = {Ann Arbor :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10740001}
}