@misc{Raaf_Harm_de_(1840-1921)_Psychologia,
 author={Raaf, Harm de (1840-1921)},
 howpublished={online},
 publisher={Warszawa : Wydawnictwo M. Arcta},
 language={pol},
 type={książka},
 title={Psychologia elementarna},
 keywords={Psychologia},
}