Brzeźniak, Mateusz. “Fan – the Prosumer of the Sports Market on the Example of Pogon Szczecin Sport Club Supporters”. Quality in Sport 4, no. 2 (June 26, 2018): 7–17. Accessed July 18, 2024. https://apcz.umk.pl/QS/article/view/QS.2018.007.