ภู่จินดา ว., & วงศ์จันทร์ ภ. (2018). Opinion of Elderly on Environmental Management for Elderly by Sub-District Local Administrative Organization. Journal of Social Sciences and Humanities Research in Asia, 24(1), 103–148. retrieved from https://so05.tci-thaijo.org/index.php/psujssh/article/view/127912