@misc{_De,
 address={Augsburg},
 howpublished={online},
 publisher={Ratdolt Erh},
 language={lat},
 type={inkunabuł},
 title={De imitatione Christi. - Ioannes Gerson : De meditatione cordis},
 keywords={Incunabula -- Poland -- Bydgoszcz -- Catalogs, Early printed books -- 15th century},
}