@incollection { Barth1969,
 title = {Die Nationalität in ihrer soziologischen Bedeutung},
 author = {Barth, Paul},
 pages = {21-48},
 year = {1969},
 publisher = {Sauer u. Auvermann},
 url = {http://nbn-resolving.de/urn:nbn:de:0168-ssoar-187944},
}