Phosri, Ackara. “Needs Assessment of Innovative Leadership Development of Administrators Under the Secondary Education Service Area Office Nakhon Phanom”. Journal of Graduate MCU KhonKaen Campus 12, no. 4 (December 30, 2025): 432–443. accessed September 2, 2026. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/283298.