@book {9783407291370, 
	title = "Feedback-Methoden",
	author = "Bastian, Johannes AND Combe, Arno AND Langer, Roman",
	isbn = "9783407291370",
	year = "2007",
	edition = "1",
	keywords = "Kommunikation, Feedback, Unterrichtsbesuch, Unterrichtsentwicklung, Unterrichtsmethodik, Rückmeldung, Schülerrückmeldung",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783407291370",
	url = "https://content-select.com/de/portal/media/view/519cc18f-90bc-49f3-9d61-253e5dbbeaba",
	publisher = "Beltz Verlagsgruppe",
}