Buathong, Pornpan, Ajaree Srikhamsuk, Nattapon Sittikul, and Ittipaat Suwathanpornkul. 2024. “Needs Assessment and Guidelines for Transformational Leadership Development of Personnel in Academic Management Groups in Extra-Large Secondary Schools”. Suan Dusit Graduate School Academic Journal 20 (2). Bankok, Thailand:1-15. https://so19.tci-thaijo.org/index.php/SDUGSAJ/article/view/38.