@misc{Zbigniew_Kulak_Ribbentrop-Bonnet_1957,
 author={Zbigniew Kulak},
 address={Poznań},
 year={1957},
 contents={Strona 6},
 publisher={Poznań : IZ,},
 language={pol},
 title={Ribbentrop-Bonnet Encounter on December 6th 1938},
 type={text},
}