@misc{Zbigniew_Kulak_Plany_1977,
 author={Zbigniew Kulak},
 address={Poznań},
 howpublished={online},
 year={1977},
 contents={Strona 56-83},
 publisher={Poznań : IZ,},
 language={pol},
 type={text},
 title={Plany i cele polityki Fryderyka II w stosunku do Polski},
}