@misc{Eckardt_Guido_Hermann_(1873-1951)_Kennen,
 author={Eckardt, Guido Hermann (1873-1951)},
 address={Riga},
 howpublished={online},
 publisher={R. Ruetz & Co.},
 language={ger},
 type={książka},
 title={Kennen Sie Pico},
}