Thilajai, Suratnaree, Praphat Naphikun, Prawet Wetcha, and Suwadee Ouppinjai. “The Supervision Model for a Dual Curriculum of Vocational and Upper Secondary Educaiton Institutions in Chiang Mai Province”. Journal of Graduate Research 11, no. 1 (June 10, 2020): 105–119. Accessed April 25, 2024. https://so02.tci-thaijo.org/index.php/banditvijai/article/view/228793.