@misc{Martinus_Polonus_Sermones,
 author={Martinus Polonus},
 address={Strassburg},
 howpublished={online},
 publisher={[Typ.Iordani=Ge.Husner]},
 language={lat},
 title={Sermones de tempore et de sanctis, cum Promptuario exemplorum},
 type={inkunabuł},
 keywords={Incunabula -- Poland -- Bydgoszcz -- Catalogs, Early printed books -- 15th century},
}