@book{223139,
	author = {Qvortrup, Jens.},
	title = {Structural, historical, and comparative perspectives},
	publisher = {Emerald,},
	year = {2009.},
	series = {Sociological studies of children and youth,},
	address = {Bingley, UK :},
	edition = {1st ed.},
	url = {http://www.emeraldinsight.com/1537-4661/12}
}