Yunru และผู้แต่งคนอื่นๆ. (2021) Factors Affecting The Customer Loyalty of Fitness Industry: A case study of Willsgym Company in China. Rajamangala University of Technology Krungthep:ม.ป.ท.Yunru และผู้แต่งคนอื่นๆ. 2021. Factors Affecting The Customer Loyalty of Fitness Industry: A case study of Willsgym Company in China. ม.ป.ท.:Rajamangala University of Technology Krungthep;Yunru และผู้แต่งคนอื่นๆ. Factors Affecting The Customer Loyalty of Fitness Industry: A case study of Willsgym Company in China. ม.ป.ท.:Rajamangala University of Technology Krungthep, 2021. Print.