Kwaengsopha, A.; Pongprayoon, T.; Sermboonsang, R.; Bunchua, E.; Navaratana na ayudhya, T. The Role of Service Marketing in Fostering Customer Loyalty: An Empirical Study of Badminton Centers in Chiang Mai. Bus. J. of Burapha manag. 2026, 15, 148-167.