Hiranburana , S. “Border Cities as Learning Economic Corridors for an Aging Society: A Case Study of Prachuap Khiri Khan Province”. SOCIAL SCIENCES RESEARCH AND ACADEMIC JOURNAL, vol. 21, no. 3, Sept. 2026, pp. 43-56, https://so05.tci-thaijo.org/index.php/JSSRA/article/view/287494.