@misc{Drużbicki_Kasper_(1590-1662)_De,
 author={Drużbicki, Kasper (1590-1662)},
 howpublished={online},
 publisher={Drukarnia Jezuitów (Poznań)},
 language={lat},
 title={De Soliditate Virtutis In Religioso Societatis Iesu requisita, Considerationes R. P. Gasparis Drvzbicki},
 type={stary druk},
}