@book{31667,
	author = {Kumpulainen, Kristiina, and Wray, David,},
	title = {Classroom interaction and social learning :},
	publisher = {RoutledgeFalmer,},
	year = {2002.},
	address = {London ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0650/2001040370-d.html}
}