Muangkasem, Benjamat. 2021. “The Model of Age-Friendly City in Ban Du Subdistrict, Muang District, Chiang Rai Province”. Journal of MCU Humanities Review 7 (1). ิิิBankok, Thailand:239-54. https://so03.tci-thaijo.org/index.php/human/article/view/252735.