สมาธิชลธาร, อุทธโยธาสมเกตุ, and คำปันบุญเลิศ. “The Development of The Manual for Dual Education Between Vocational Education and Secondary Education in Sob Moei Wittayakom School, Mae Hong Son Province”. Journal of Graduate Research 9, no. 1 (June 27, 2018): 149-165. Accessed November 14, 2019. https://www.tci-thaijo.org/index.php/banditvijai/article/view/101881.