@misc{Pawłucki_Andrzej_The_2021,
 author={Pawłucki, Andrzej},
 type={article},
 publisher={Jan Długosz University in Czestochowa},
 title={The importance of metaphysics in the theory of nontrivial physical education – Polish tradition},
 address={Częstochowa},
 year={2021},
 language={eng},
}