@misc{Drużbicki_Kasper_(1590-1662)_De,
 author={Drużbicki, Kasper (1590-1662)},
 howpublished={online},
 publisher={Franz Kaspar Aldenkirchen},
 language={lat},
 title={De Soliditate Virtutis In Religioso Societatis Jesu requisita Considerationes R. P. Gasparis Druzbicki Societatis Jesu},
 type={starodruk},
}