Phiboon, Wichai. “Prevalence and Factors Associated with Insomnia among the Elderly in Huai-Yot Sub-District, Huai-Yot District, Trang Province”. Thai Journal of Public Health and Health Sciences 9, no. 2 (August 26, 2026): 119–135. accessed September 19, 2026. https://he02.tci-thaijo.org/index.php/tjph/article/view/280733.