« EFFECTIVENESS OF MARKETING-MIX STRATEGIES ON CUSTOMERS OF FITNESS ESTABLISHMENTS. PILOT AND PRELIMINARY STUDY IN THE CITY OF YAOUNDE (CAMEROON) », Revue ISG, vol. 5, nᵒ 2, mai 2022, Consulté le: oct. 22, 2026. Disponible sur: https://www.revue-isg.com/index.php/home/article/view/913