Vorakulcherm P, Poopair A. The Construction and Efficiency Evaluation of competency-Based Instructional Modules on Educational Analysis for Developing the Competence of the Business Teachers at Secondary School Level. kasetsart J. Soc. Sci. [internet]. 1991 Jan. 1 [cited 2026 Sep. 11];12(1):28-37. available from: https://so04.tci-thaijo.org/index.php/kjss/article/view/243992