EUMSIN, P. Policies on election campaign signs (2023) are difficult to implement reflect the problems of Thai Polity. วารสารวิชาการนอร์ทเทิร์น, Tak,Thailand, v. 11, n. 2, p. 137–159, 2024. Disponível em: https://so09.tci-thaijo.org/index.php/AJntc/article/view/5220. Acesso em: 16 พ.ค. 2025.