Phadungkit, J. ., and P. . Chatprasoet. “Operational Problems in E-Government Procurement (e-GP) by Procurement Officers at Mahasarakham University”. Journal of Politics and Governance, vol. 10, no. 2, July 2020, pp. 240-54, https://so03.tci-thaijo.org/index.php/jopag/article/view/245546.