@misc{Szeklicki_Robert_Correlates,
 author={Szeklicki, Robert},
 copyright={Akademia Wychowania Fizycznego w Poznaniu},
 howpublished={online},
 publisher={Akademia Wychowania Fizycznego w Poznaniu},
 language={eng},
 type={artykuł},
 title={Correlates of self-perceived health and physical activity of children and youth in Poland},
}