ศิวะกรภูริหิรัญก., & จิตรนันท์ธ. (2019). The Development of Program for Enhancing Personnel Officers’ Competency in Personnel Administration Section under Kalasin Primary Educational Service Area Office 2. Journal of Roi Et Rajabhat University, 13(1), 38-48. Retrieved from https://www.tci-thaijo.org/index.php/reru/article/view/185906