@book{6504,
	author = {Cowie, Helen.},
	title = {Social interaction in learning and instruction :},
	publisher = {Pergamon,},
	year = {2000.},
	address = {Oxford ;},
	edition = {1st ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy0610/00026840-d.html}
}