Rujiganjanarat, Kitisak, and Vanida Durongritichai. 2025. “Factor analysis of Self-reliance in health according to the philosophy of sufficiency economy among the older adults outside municipal areas Phetchaburi Province”. Journal of Medical and Public Health Region 4 15 (2). Saraburi,Thailand:32-43. https://he01.tci-thaijo.org/index.php/JMPH4/article/view/266328.