@misc{Danckerts_Cornelius_Ducatus,
 author={Danckerts, Cornelius},
 address={Amstelodami},
 howpublished={online},
 publisher={[s.n.]},
 language={lat},
 language={ger},
 type={mapa},
 title={Ducatus Bremae & Ferdae maximaeque partis fluminis Visurgis descriptio per Cornelium Danckerts},
 keywords={Brema (okręg) -- mapy -- 17 w, Niemcy -- mapy -- 17 w},
}