@misc{Ruge_Sophus_(1831-1903)_Norwegen,
 author={Ruge, Sophus (1831-1903)},
 howpublished={online},
 publisher={Verlag von Velhagen & Klasing},
 language={ger},
 type={książka},
 title={Norwegen},
 keywords={Norwegia},
}