@book{1502,
	author = {Linden, J. L. van der.},
	title = {Dialogic learning :},
	publisher = {Kluwer Academic Publishers,},
	year = {c2004.},
	address = {Dordrecht ;},
	url = {http://www.loc.gov/catdir/enhancements/fy0821/2004042423-d.html}
}