@misc{Welis_Wilda_Physical_2023,
 author={Welis, Wilda and Yendrizal and Darni and Tri Mario, Deby},
 type={artykuł},
 publisher={Projack},
 title={Physical fitness of students in Indonesian during the COVID-19 period: Physical activity, body mass index, and socioeconomic status},
 address={Częstochowa},
 year={2023},
 language={eng},
}