@misc{_Extra-Beilage,
 howpublished={online},
 publisher={Druck, Verlag und Expedition J. B. Lange},
 language={niemiecki},
 type={czasopisma},
 title={Extra-Beilage des Gnesener Kreisblatts 1908.09.20 Nr76},
 keywords={prawo, czasopisma, Gniezno},
}