@book {9783966457897, 
	title = "Glück ist Ansichtssache",
	isbn = "9783966457897",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783966457897",
	url = "https://content-select.com/de/portal/media/view/62309ae5-e184-4e78-8836-1679b0dd2d03",
	publisher = "BMU Verlag",
}