@misc{Luther_Martin_(1483-1546)_Libellvs,
 author={Luther, Martin (1483-1546)},
 howpublished={online},
 publisher={(Magdebvrgæ},
 publisher={Joachimus Walden excudebat},
 language={lat},
 type={stary druk},
 title={Libellvs Cantionvm},
}