Thongwan, C. “The impact of the expansion of Udon Thani Rajabhat University (Sam Phrao Campus)”. Journal for Strategy and Enterprise Competitiveness, vol. 1, no. 2, Aug. 2022, pp. 42-57, https://so07.tci-thaijo.org/index.php/STECOJournal/article/view/1040.