pontin, Prasert. 2019. “THE APPROPRIATE MANAGEMENT SYSTEM OF ELDERLY WELFARE: A CASE STUDY OF TAMBON SUTHEP, AMPHUR MUANG CHIANG MAI, CHIANG MAI PROVINCE”. Journal of MCU Social Science Review 8 (4). Ayutthaya, Thailand:108-23. https://so03.tci-thaijo.org/index.php/jssr/article/view/167476.