@book{684,
	author = {Pistorius, Hannelore and Mukmenova, Nelli },
	title = {studio [21] Testheft A1},
	publisher = {Cornelsen Schulverlage,},
	year = {2013},
	address = {Berlin :},
	edition = {2.Auflage, 1.Druck 2014}
}