Changjun, Kanphitcha, and Sasilak Khayankij. “State and Problems of Distance Learning Instructional Management in the Covid-19 Situation of Preschool Teachersin School under Lopburi Primary Educations Service Area Office 1”. An Online Journal of Education 17, no. 2 (December 10, 2022): OJED1702021. accessed August 26, 2026. https://so01.tci-thaijo.org/index.php/OJED/article/view/260506.