@book {9783842690318, 
	title = "Was die PDL wissen muss",
	author = "König, Jutta",
	isbn = "9783842690318",
	year = "2019",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783842690318",
	url = "https://content-select.com/de/portal/media/view/602fd451-5f08-4e5e-97f8-5c3eb0dd2d03",
	publisher = "Schlütersche",
	language = "ger",
}