@misc{Saczuk_Jerzy_Fitness_2022,
 author={Saczuk, Jerzy and Wasiluk, Agnieszka},
 type={article},
 publisher={Jan Długosz University in Czestochowa},
 title={Fitness of five-year-olds with different levels of motor skills},
 address={Częstochowa},
 year={2022},
 language={eng},
}