แก้วร่องคำ พ. “Approach to Improve Local Tax Collection Process of Khamcha-I Subdistrict Administrative Organization, Khamcha-I, Mukdahan”. Governance Journal, vol. 2, no. 1, June 2013, pp. 134-5, https://so01.tci-thaijo.org/index.php/gjournal-ksu/article/view/89101.