@misc{Lelonek_Magdalena_Level_2020,
 author={Lelonek, Magdalena and Przychodni, Agnieszka},
 type={artykuł},
 publisher={Projack},
 title={Level of physical activity during school recess within aspect of available dedicated playing space},
 address={Częstochowa},
 year={2020},
 language={eng},
}