@misc{Gracz_Jacek_Relationship,
 author={Gracz, Jacek and Majewska, Karolina},
 copyright={Akademia Wychowania Fizycznego w Poznaniu},
 howpublished={online},
 publisher={Akademia Wychowania Fizycznego w Poznaniu},
 language={eng},
 type={artykuł},
 title={Relationship between the level of general physical activity and the choice of a motor recreation form},
 keywords={physical activity, motor recreation, tennis, sailing},
}