@misc{Gustmayer_Fabian_(16..-16..)_Epistola,
 author={Gustmayer, Fabian (16..-16..)},
 howpublished={online},
 publisher={[Dawid Fryderyk Rhete]},
 language={pol},
 language={lat},
 title={Epistola Mercatoris cujusdam ad Equitem Polonum, Statum modernum rei monetariæ concernens},
 type={starodruk},
}