LEŚNIEWSKA, A.; STOSIK, A. Personal trainers professional qualifications - demands of the labour market. Quality in Sport, [S. l.], v. 2, n. 1, p. 20–29, 2016. DOI: 10.12775/QS.2016.002. Disponível em: https://apcz.umk.pl/QS/article/view/QS.2016.002. Acesso em: 26 apr. 2024.