@book {9783961860944, 
	title = "Jahrbuch Nachhaltigkeit 2019",
	author = "metropolitan Fachredaktion, ",
	isbn = "9783961860944",
	year = "2019",
	edition = "1",
	keywords = "CSR, Umweltschutz, Soziale Verantwortung, Unternehmensethik",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783961860944",
	url = "https://content-select.com/de/portal/media/view/5c767c91-6650-4718-b018-66a7b0dd2d03",
	publisher = "Walhalla Fachverlag",
	language = "ger",
}