@misc{Rundstein_Szymon_(1876-1942)_Obywatelstwo,
 author={Rundstein, Szymon (1876-1942)},
 howpublished={online},
 publisher={F. Hoesick},
 language={Polish},
 title={Obywatelstwo i opcja w traktacie ryskim},
 type={book},
 keywords={Treaty of Riga (1921), citizenship, Poland, political history},
}