Trimetsoontorn , Jirasek, and Apisit Chattananon. “The development competency strategies of personnel to be transformational leaders”. Business Administration and Economics Review 19, no. 2 (August 1, 2023): 185–197. accessed August 17, 2025. https://so15.tci-thaijo.org/index.php/bae/article/view/376.