@misc{Knötel_Paul_(1858-1934)_Bürgerliche,
 author={Knötel, Paul (1858-1934)},
 howpublished={online},
 publisher={Verlag von A. Kothe},
 language={ger},
 type={książka},
 title={Bürgerliche Heraldik},
 keywords={heraldyka, Niemcy, herby},
}