Visuttipukdee, Kamonphat, and ธีรสรณ์ สิทธิ์. “THE DEVELOPMENT OF KEY PERFORMANCE INDICATORS FOR SUCCESSFUL MANAGEMENT OF THE ELDERLY CARE CENTER IN THE 21ST CENTURY”. Academic Journal of Thailand National Sports University 13, no. 2 (April 30, 2021): 18–33. accessed September 18, 2026. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/250455.