ดุลยเกียรต ิจิรายุส. “Self Care of the Elderly in Huayod District, Trang Province, Thailand”. Journal of Health Science of Thailand 29, no. 5 (October 26, 2020): 783–789. Accessed December 22, 2024. https://thaidj.org/index.php/JHS/article/view/9827.