Chuaybamrung, Piamamporn, Direk Nunklam, Pairat, Detchart Treesap, and Samit onkong. “THE PROMOTIONAL ACTIVITIES TO THE HAPPINESS OF ELDERLY IN AREA OF NA PHO SUB-DISTRICT, THUNG SONG DISTRICT, NAKHON SI THAMMARAT PROVINCE”. Journal of MCU Nakhondhat 9, no. 5 (May 31, 2022): 212–225. Accessed April 23, 2024. https://so03.tci-thaijo.org/index.php/JMND/article/view/261259.