@misc{Heilpern_Adam_(1880-post_1939)_Przyczynki_1912,
 author={Heilpern, Adam (1880-post 1939)},
 copyright={Public Domain},
 address={Lwów [etc.]},
 howpublished={online},
 year={1912},
 publisher={Nakł. "Polskie Towarz. Naukowe"},
 language={pol},
 type={Text},
 title={Przyczynki do psychologii twórczości},
 URL={http://rcin.org.pl/Content/7522/PDF/WA004_1640_P10497_Heilpern-Przyczynki.pdf},
 keywords={psychology of creation},
}