@misc{Sobieski_Wacław_(1872–1935)_Bolesław_1925,
 author={Sobieski, Wacław (1872–1935)},
 copyright={Public Domain},
 address={Kraków},
 howpublished={online},
 year={1925},
 publisher={Wydawnictwo Towarzystwa Szkoły Ludowej},
 language={pol},
 title={Bolesław Chrobry},
 URL={http://rcin.org.pl/Content/5627/PDF/WA308_14729_B5564_BOLESLAW-CHROBRY_I.pdf},
 keywords={Bolesław I the Brave (king of Poland ; ca 967-1025), 10th-11th c. -- Poland, history of Poland, political history of Poland, Polish state -- beginnings, Polish state in early Middle Ages -- organization, rulers of Poland},
}