Prasartkul, Pramote, Anchalee Varangrat, Patama Vapattanawong, and Madee Kanchanakitsakul. “Age - Sex Structure of Aged Population in Thailand”. Journal of Population and Social Studies [JPSS] 8, no. 2 (May 11, 2023): 1–16. Accessed May 19, 2024. https://so03.tci-thaijo.org/index.php/jpss/article/view/268523.