@misc{Koczalski_Raul_(1885-1948)_Frederic,
 author={Koczalski, Raul (1885-1948)},
 address={Köln-Bayenthal},
 howpublished={online},
 publisher={Tischer & Jagenberg},
 language={ger},
 type={książka},
 title={Frederic Chopin : Betrachtungen, Skizzen, Analysen},
 keywords={Chopin, Fryderyk (1810-1849)},
}