Стадник, Светлана, and Наталия Середа. “The Marketing Analysis of Competitiveness of Fitness-Clubs in Kharkiv”. Slobozhanskyi Herald of Science and Sport, no. 6(56) (December 31, 2016): 120–124. Accessed November 22, 2024. https://journals.uran.ua/index.php/1991-0177/article/view/87695.