@misc{Michał_Cieśla_Marcin_1952,
 author={Michał Cieśla},
 address={Poznań},
 year={1952},
 contents={Strona 475-495},
 publisher={Poznań : IZ,},
 language={pol},
 title={Marcin Opitz w Polsce},
 type={text},
}