@misc{Polevoy_Georgiy_Development_2020,
 author={Polevoy, Georgiy},
 type={artykuł},
 publisher={Projack},
 title={Development of coordination and speed-power abilities in children 8-9 years with the help of exercise Classics},
 address={Częstochowa},
 year={2020},
 language={eng},
}