@misc{Oppman_Artur_(1867-1931)_Hymn,
 author={Oppman, Artur (1867-1931)},
 howpublished={online},
 publisher={Gebethner i Wolff},
 language={polski},
 type={book},
 title={Hymn wolności},
 keywords={1901-2000, 1918-1939, Literatura polska, Poezja},
}