@misc{_Speculum,
 address={Strasburg},
 howpublished={online},
 publisher={[Typ. Jordani=Georg Husner]},
 language={lat},
 title={Speculum exemplorum},
 type={inkunabuł},
 keywords={Incunabula -- Poland -- Bydgoszcz -- Catalogs, Early printed books -- 15th century},
}