khunnapo, chakrit. “The Guideline on Land Traffic Act B.E. 2522 Revision to Be Appropriate for Elderly Persons”. Huachiew Chalermprakiet Law Journal, vol. 12, no. 1, Nov. 2021, pp. 17-28, https://so01.tci-thaijo.org/index.php/lawhcu/article/view/241894.