@book{206039,
	author = {Pinkwart, Niels. and ebrary, Inc.},
	title = {Educational technologies for teaching argumentation skills},
	publisher = {Bentham Books,},
	year = {[2012]},
	address = {Sharjah :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10610303}
}