Chongkonsatit, W., N. . Wongsinphaibon, A. . Kurupakorn, K. . Urairoekkun, and K. . Noimanee. “7Cs Marketing Mix Factors in a Dental School Comprehensive Care Clinic: A Confirmatory Factor Analysis”. Mahidol Dental Journal, vol. 42, no. 1, Mar. 2022, pp. 13-24, https://he02.tci-thaijo.org/index.php/mdentjournal/article/view/253769.