@misc{Urbaniak-Brekke_Anna_Factors_2019,
 author={Urbaniak-Brekke, Anna and Solbraa, Torkjel},
 type={artykuł},
 publisher={Projack},
 title={Factors influencing physical activity level of the inhabitants in Norway and Poland – the case of sports and recreation infrastructure},
 address={Częstochowa},
 year={2019},
 language={eng},
}