@misc{_Plan_[ca,
 copyright={Public Domain},
 address={[S. l.]},
 address={(Poznań)},
 howpublished={online},
 year={[ca 1929]},
 publisher={[s.n.]},
 publisher={(Drukarnia św. Wojciecha)},
 language={pol},
 title={Plan stołecznego miasta Poznania},
 type={Image},
 keywords={street maps, Poznań street maps, Poznań},
}