Kalapak, Patumwan, and Varatchaya Sirivat. “Quality of Life for the Elderly in Bangkok Metropolis”. Rajapark Journal 14, no. 36 (October 20, 2020): 302–316. accessed October 4, 2026. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/246860.