@misc{Nicolaus_de_Błonie_De,
 author={Nicolaus de Błonie},
 address={Strasburg},
 howpublished={online},
 publisher={Flach Mart.},
 language={lat},
 type={inkunabuł},
 title={De sacramentis},
 keywords={Incunabula -- Poland -- Bydgoszcz -- Catalogs, Early printed books -- 15th century},
}