วชิรขจร ส. (2018) “Factors Affecting the Efficiency of Local Governments’ Policy Analysis and Planning Officials on Development Plan Formulation”, Local Administration Journal, 11(4), pp. 45–62. available at: https://so04.tci-thaijo.org/index.php/colakkujournals/article/view/163219 (accessed: 15 September 2026).