@misc{Crell_Fortunatus_(?-1605)_Fortunati,
 author={Crell, Fortunatus (?-1605)},
 howpublished={online},
 publisher={Matthäus Harnisch},
 language={lat},
 type={starodruk},
 title={Fortunati Crellij Isagoge Logica: In Dvas Partes Distribvta: In communem & propriam},
 keywords={filozofia i etyka, logika},
}