@misc{Heidenstein_Reinhold_[...],
 author={Heidenstein, Reinhold},
 howpublished={online},
 publisher={Waldkirch Conrad},
 language={lat},
 type={starodruki},
 title={[...] De bello Moscovitico quod Stephanus Rex Poloniae gessit Commentariorum libri VI.},
 keywords={Stefan Batory (1533-1586) król Polski},
}