Nurmakhanova Г.; Vasilievа М. The specifics of the marketing activities of fitness clubs. Рroblems of engineering and professional education, [S. l.], v. 6, n. 06, p. 8, 2023. DOI: 10.32523/2220-685X-2011-6-06-8. Disponível em: https://bulprengpe.enu.kz/index.php/main/article/view/254. Acesso em: 16 apr. 2024.