@misc{Safft_Michael_(17..-_)_De,
 author={Safft, Michael (17..- )},
 howpublished={online},
 publisher={Gedani},
 publisher={Typis Thom. Joh. Schreiber [...]},
 language={lat},
 type={stary druk},
 title={De Polonorum Majoribus},
}