Chuaybamrung, P. ., D. . Nunklam, Pairat, D. . Treesap, and S. . 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, vol. 9, no. 5, May 2022, pp. 212-25, https://so03.tci-thaijo.org/index.php/JMND/article/view/261259.