KALINOWSKI, Paweł, NOWAKOWSKA, Monika, JERSZYŃSKI, Damian and BOJKOWSKI, Łukasz. The level of Polish youth champions’ temperamental qualities in football. Quality in Sport. Online. 3 August 2019. Vol. 5, no. 1, pp. 7-14. [Accessed 18 July 2024]. DOI 10.12775/QS.2019.001.