@book {9783823379096, 
	title = "Heterogenität im Fremdsprachenunterricht",
	editor = "Doff, Sabine",
	isbn = "9783823379096",
	edition = "1",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783823379096",
	url = "https://content-select.com/de/portal/media/view/57889b10-d294-4393-9123-4e0db0dd2d03",
	publisher = "Narr Francke Attempto",
	language = "ger",
}