@misc{Cynarski_Wojciech_J._Ethical_2021,
 author={Cynarski, Wojciech J. and Yu, Jong-Hoon},
 type={artykuł},
 publisher={Projack},
 title={Ethical values in jujutsu of Japanese origin},
 address={Częstochowa},
 year={2021},
 language={eng},
}