@book {9783816984504, 
	title = "Wer verdient wie viel?",
	isbn = "9783816984504",
	edition = "12",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783816984504",
	url = "https://content-select.com/de/portal/media/view/5d317fec-f144-4f57-907c-031db0dd2d03",
	publisher = "expert verlag",
}