@book {9783518756041, 
	title = "Gesellschaftsstruktur und Semantik",
	author = "Luhmann, Niklas",
	isbn = "9783518756041",
	year = "2012",
	edition = "1",
	url = "http://www.content-select.com/index.php?id=bib_view&ean=9783518756041",
	url = "https://content-select.com/de/portal/media/view/5953c8d1-f978-4ad4-b105-0413b0dd2d03",
	publisher = "Suhrkamp Verlag",
	language = "ger",
}