@misc{Poszwa_Louis_L'Émigration,
 author={Poszwa, Louis},
 copyright={Poszwa, Louis},
 address={Paris},
 howpublished={online},
 publisher={Gebethner & Wolff},
 language={fre},
 type={książka},
 title={L'Émigration polonaise agricole en France},
}