Liu, Yumei, and Pimparit Tiangpak. 2026. “Information technology skills in the 21st century among school administrators under the Nonthaburi Primary Educational Service Area Office 1: Information technology skills in the 21st century among school administrators under the Nonthaburi Primary Educational Service Area Office 1”. Journal of Liberal Arts and Education (Online) 2 (1). Lampang, Thailand:69-80. https://so11.tci-thaijo.org/index.php/LAE/article/view/3674.