@misc{Metio_Adriano_Frisia,
 author={Metio, Adriano},
 address={Amstelodami},
 howpublished={online},
 publisher={Guiljelmus Blaeu},
 language={lat},
 type={mapa},
 title={Frisia Occidentalis},
 keywords={Fryzja -- mapy -- 17 w, Holandia -- mapy -- 17 w},
}