Jundaharn, Montira, and Jirasuk Suksawat. “Happiness of Self-Reliance With Elderly in Countryside Phu Rua, Loei”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 12, no. 2 (February 1, 2018): 515–530. Accessed May 9, 2024. https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/104626.