@book {9783842688582, 
	title = "100 Tipps für die Validation",
	author = "Messer, Barbara",
	isbn = "9783842688582",
	year = "2016",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783842688582",
	url = "https://content-select.com/de/portal/media/view/5898448d-7a58-4b30-8c6f-47f1b0dd2d03",
	publisher = "Schlütersche",
	language = "ger",
}