Jaiwanglok, B., Comesorn, S., & Suwannawat, K. (2018). The Study of Needs Asessment in the Development of Ability in Learning Management of Teachers under the Office of Primary Education, Service Area 3. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, 12(2), 470–485. Retrieved from https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/122382