|ref =<ref name="GUS2011">{{cite web|format=PDF|url=http://www.stat.gov.pl/cps/rde/xbcr/gus/LUD_raport_z_wynikow_NSP2011.pdf|archiveurl=http://web.archive.org/web/20121021013327/http://www.stat.gov.pl/cps/rde/xbcr/gus/LUD_raport_z_wynikow_NSP2011.pdf|archivedate=2012-10-21|title=Raport z wyników: Narodowy Spis Powszechny Ludności i Mieszkań 2011|trans-title=Report of results: National Census of Population and Housing, 2011.|language=pl|work=[[Central Statistical Office (Poland)|Central Statistical Office of Poland]]|date=2011}}</ref>
