1.
METELSKI, Adam and LESZCZYŃSKI, Marcin. The digital transformation of football clubs based on the example of social media. Journal of Education, Health and Sport. Online. 23 May 2022. Vol. 12, no. 5, pp. 204-214. [Accessed 2 July 2025]. DOI 10.12775/JEHS.2022.12.05.015.