Thungwha, Sompon, and Worrapon Wangkananon. “Customer Relationship Management (CRM) Strategy for Building Loyalty of Supercenter Customer in Thailand”. Ph.D. in Social Sciences Journal 8, no. 3 (December 31, 2018): 198–213. Accessed April 28, 2024. https://so05.tci-thaijo.org/index.php/phdssj/article/view/142234.