@misc{Szczech_Bernard_(1950-2022)_Zamek,
 author={Szczech, Bernard (1950-2022) and Jedynak, Zdzisław},
 howpublished={online},
 publisher={[B.w.]},
 language={pol},
 title={Zamek Piastów w Bytomiu},
 type={nadbitka},
 keywords={Bytom, zamek, historia},
}