@misc{Frensdorff_Ferdinand_Das,
 author={Frensdorff Ferdinand},
 howpublished={online},
 publisher={b. w.},
 language={ger},
 language={swe},
 title={Das Stadtrecht von Visby},
 type={książka},
 keywords={Hanza, Frensdorff, Ferdinand (1833-1931), Visby - prawo},
}