Leśniewska, Aleksandra, and Aneta Stosik. “Kwalifikacje I Kompetencje trenerów Personalnych a Oczekiwania Rynku Pracy = Personal Trainers Professional Qualifications - Demands of the Labour Market”. Journal of Education, Health and Sport 6, no. 9 (September 6, 2016): 25–35. Accessed July 27, 2024. https://apcz.umk.pl/JEHS/article/view/3831.