@book {9783407224811, 
	title = "Janusz Korczak",
	author = "Waaldijk, Kees",
	isbn = "9783407224811",
	year = "2002",
	edition = "1",
	keywords = "Pädagogik, Korczak, Janusz, Pädagoge /Biographie",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783407224811",
	url = "https://content-select.com/de/portal/media/view/519cc153-3cc8-4c0e-b5a4-253f5dbbeaba",
	publisher = "Beltz Verlagsgruppe",
	language = "ger",
}