Jirachottrakul, Prad, Panyawat Chutamas, and Teeradej Snongtaweeporn. 2025. “Management to Increase the Quality of Service of the Elderly Care Business in the Central Region”. Dhammathas Academic Journal 25 (3):247-62. https://so06.tci-thaijo.org/index.php/dhammathas/article/view/283524.