Punpukdee, A., C. Wattana, W. Punpairoj, U. Srichuachom, P. Yaklai, and S. Trongtortam. “Thai Private Hospitals’ Innovative Healthcare Cultivation: An Exploratory Factor Analysis (EFA)”. MBA-KKU Journal, vol. 16, no. 2, Nov. 2023, pp. 32-67, https://so04.tci-thaijo.org/index.php/mbakkujournal/article/view/262698.