Phiwthong, H., S. Yuphong, and A. Poolkrajang. “The Development of a Flexible Management Model for Middle-Level Executives of the Ministry of Finance”. Ph.D. in Social Sciences Journal, vol. 14, no. 3, Oct. 2024, pp. 779-92, https://so05.tci-thaijo.org/index.php/phdssj/article/view/270792.