@misc{Szelągowski_Adam_(1873-1961)_Historja_1936,
 author={Szelągowski, Adam (1873-1961)},
 address={Warszawa},
 howpublished={online},
 year={1936},
 publisher={M. Arct},
 title={Historja powszechna. T. 1},
 keywords={historia},
}