คำดวง จ.; เชาวรัตน์ ศ.; โชติเชย น. Tax Collection Ability of Custom Regional Division 7, Lao People’s Democratic Republic. Journal of Roi Et Rajabhat University, [S. l.], v. 12, p. 121–128, 2017. Disponível em: https://so03.tci-thaijo.org/index.php/reru/article/view/176306. Acesso em: 7 may. 2024.