@misc{Bartoszewicz_Julian_(1821-1870)_Historja,
 author={Bartoszewicz, Julian (1821-1870)},
 howpublished={online},
 publisher={Kazimierz Bartoszewicz},
 language={pol},
 type={książka},
 title={Historja pierwotna Polski. T. 4},
 keywords={Polska - 12-13 w.},
}