Srihera, Jinjutha, Nattapong Techarattanased, Bundit Pungnirund, and Tanapol Kortana. 2025. “A Model for Enhancing the Efficiency of Elderly care Businesses Sustainably in Bangkok”. Rajapark Journal 19 (62). Bangkok, Thailand:242-62. https://so05.tci-thaijo.org/index.php/RJPJ/article/view/275999.