@misc{Frenssen_Gustav_(1863-1945)_Der,
 author={Frenssen, Gustav (1863-1945)},
 howpublished={online},
 publisher={Georg Truckenmüller Verlag},
 language={ger},
 type={książka},
 title={Der Glaube der Nordmark},
 keywords={chrzescijaństwo, religia, Niemcy},
}