@incollection { Simmel1969,
title = {Soziologie der Geselligkeit },
author = {Simmel, Georg },
pages = {1-16 },
year = {1969 },
publisher = {Sauer u. Auvermann },
url = {http://nbn-resolving.de/urn:nbn:de:0168-ssoar-187880 },
}