@misc{Keyser_Erich_(1893-1968)_Danzig,
 author={Keyser, Erich (1893-1968)},
 howpublished={online},
 publisher={[s. n.]},
 language={eng},
 type={książka},
 title={Danzig},
 keywords={Gdańsk (Polska), historia, wydawnictwa popularne},
}