Stodółka, Weronika, Damian Filipowski, Jerzy Kosa, and Jacek Stodółka. 2017. “Motives of Physically Active Adults to Participate in the 5 PKO Wroclaw Night Half Marathon”. Journal of Education, Health and Sport 7 (9):517-25. https://apcz.umk.pl/JEHS/article/view/4862.