@misc{Zerbolt_Gerard_(1367–1398)_De,
 author={Zerbolt, Gerard (1367–1398) and Thomas à Kempis (1379–1471) and Berthold ( –1350)},
 howpublished={online},
 publisher={[Ioannes Prüss]},
 language={lat},
 language={ger},
 type={inkunabuł},
 title={De spiritualibus ascensionibus. - Thomas à Kempis: Meditationes de vita Christi. - Bertholdus: Horologium devotionis. P. 2.},
}