@misc{Drużbicki_Kasper_(1590-1662)_Negotiatio,
 author={Drużbicki, Kasper (1590-1662)},
 howpublished={online},
 publisher={Johann Kasper Bencard - Witwe und Erben},
 language={lat},
 type={starodruk},
 title={Negotiatio Spiritualis Seu XXX. Industriæ : Per ordibaria piarum actionum exercitia plurimum},
}