@misc{Drużbicki_Kasper_(1590-1662)_Observationes,
 author={Drużbicki, Kasper (1590-1662)},
 howpublished={online},
 publisher={Olivæ},
 publisher={[Druk. Cystersów] :},
 publisher={Imprimebat Joannes Jacobus Textor, Factor},
 language={lat},
 type={stary druk},
 title={Observationes Liturgicæ},
}