Treewichit, W., Amornruangtrakoo, S., Boonlertwanit, K., Sriphet, N., & Hirunkasi, K. (2021). Transformational Leadership of Management: Case Study of a Private Company. Vocational Education Central Region Journal, 5(1), 25–33. Retrieved from https://so06.tci-thaijo.org/index.php/IVECJournal/article/view/248685