@misc{Placentius_Joannes_Leo_(1485-1548)._Pvgna,
 author={Placentius, Joannes Leo (1485-1548).},
 howpublished={online},
 language={lat},
 title={Pvgna Porcorvm per P. Portium Poetam [...].},
 type={stary druk},
}