@misc{Piotr_z_Proboszczowic_(ca_1509-1565)_Kalender,,
 author={Piotr z Proboszczowic (ca 1509-1565)},
 howpublished={online},
 publisher={Drukarnia Łazarzowa},
 language={ger},
 type={starodruk},
 title={Kalender, mitt sampt den Ewangelion, vnd Aspekten der Planeten},
 keywords={starodruki 16 w.},
}