Mrozkowiak, M., Bereznyakova, A. I., Cheremisina, V. F. and Zukow, W. (2015) “O narzędziach i wynikach badań = About the tools and the results of the research”, Journal of Education, Health and Sport, 5(11), pp. 245–260. Available at: https://apcz.umk.pl/JEHS/article/view/3096 (Accessed: 26 April 2024).