@misc{Heinrich_Isaac_(1450-1517)_Historiarvm,
 author={Heinrich, Isaac (1450-1517)},
 howpublished={online},
 publisher={H. Formschneider},
 title={Historiarvm Choralis. Tenor Tomvs Secvndvs Choralis Constantini},
 type={starodruk muzyczny},
}