@book{204555,
	author = {Szagun, Gisela, and Stumper, Barbara,},
	title = {German communicative development inventory :},
	publisher = {PL Academic Research,},
	year = {2014.},
	address = {Frankfurt am Main, [Germany] :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10860668}
}