Siriram, S., S. Boonchunone, and M. Namee. “Enhancement of Efficiency, Promoting, and Supporting Innovative Electronic Procurement for Small and Medium-Sized Enterprises (SMEs)”. Ph.D. in Social Sciences Journal, vol. 13, no. 1, Apr. 2023, pp. 30-43, https://so05.tci-thaijo.org/index.php/phdssj/article/view/259808.