Sangranoo, Surapong, and Rujikorn Fakabon. “The Effectiveness of the Municipality after Granting Status from Sub-district Administrative Organizations in Thawatchaburi District, Roi Et Province”. Dhammathas Academic Journal 19, no. 2 (June 30, 2019): 165–174. accessed August 29, 2026. https://so06.tci-thaijo.org/index.php/dhammathas/article/view/171475.