BIRIUCHYNSKA , S.; BILETSKA, V. MODERN METHODS OF EVALUATING WORK EFFICIENCY OF FITNESS CLUBS STAFF. Спортивна наука та здоров’я людини, [S. l.], n. 1(9), 2023. DOI: 10.28925/2664-2069.2023.14. Disponível em: http://sporthealth.kubg.edu.ua/article/view/279029. Acesso em: 6 квіт. 2025.