Hanthongchai, B. (2019) “The States and Problems of Strategic Guidance Operation in Secondary Schools Under the Office of Secondary Educational Service in Udon Thani”, Academic Journal of Mahamakut Buddhist University Roi Et Campus, 9(2), pp. 358–366. Available at: https://so01.tci-thaijo.org/index.php/AJMBU/article/view/244710 (Accessed: 28 March 2024).