Kalinowski, Paweł, and Marta Lischka Ołpińska. “Persönlichkeit Der Fussballer AMP Futbol = Personality Footballers AMP Futbol”. Journal of Education, Health and Sport 6, no. 8 (August 16, 2016): 227–235. Accessed June 29, 2025. https://apcz.umk.pl/JEHS/article/view/3751.