@misc{Henricus_de_Hassia_(1325–1397)_Tractatulus,
 author={Henricus de Hassia (1325–1397)},
 howpublished={online},
 publisher={[Heinrich Quentell]},
 language={lat},
 type={inkunabuł},
 title={Tractatulus de arte praedicandi.},
 keywords={inkunabuły Biblioteki PTPN, Kazania -- stare druki do 1500.},
}