@misc{Knötel_Paul_Bürgerliche_1902,
 author={Knötel, Paul},
 address={Tarnowitz},
 year={1902},
 publisher={[s.n.]},
 language={ger},
 title={Bürgerliche Heraldik},
 type={książka},
 keywords={Heraldyka, Historia, Czapla (rodzina)},
}