Intha, S. “Factors Affecting the Effectiveness and Efficiency of the Budgetary Management of Traffic and Transportation Department, Bangkok Metropolitan Administration”. Journal of Multidisciplinary in Humanities and Social Sciences, vol. 1, no. 1, June 2020, pp. 37-58, https://so04.tci-thaijo.org/index.php/jmhs1_s/article/view/243218.