Naknun, Patcharee, Jakkapong Piemmetta, and Thanapon Sarunburana. “Guidelines for Developing Elderly’s Quality of Life in the Area of Khao Kaew Subdistrict Administrative Organization Lan Saka District, Nakhon Si Thammarat Province”. Rajapark Journal 18, no. 56 (February 29, 2024): 234–248. Accessed May 17, 2024. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/269189.