@misc{Tyski_Zygmunt_(c._1880_–_c._1933)_Gradus_1906,
 author={Tyski, Zygmunt (c. 1880 – c. 1933)},
 copyright={Public Domain},
 address={Warszawa},
 howpublished={online},
 year={1906},
 publisher={nakł. Księgarni E. Wende i Spółka},
 language={pol},
 type={Text},
 title={Gradus ad Parnassum},
 URL={http://www.rcin.org.pl/Content/239228/WA248_275668_F-3464_tyski-gradus_o.pdf},
 keywords={Polish poetry - 19/20 c.},
}