Buakaew, Somnug, and Kitti Rattanarasri. “The Development of Dual Vocational Education System Management Model under Uttaradit Vocational Education Office”. Ratchaphruek Journal 19, no. 1 (April 2, 2021): 129–139. accessed August 26, 2026. https://so05.tci-thaijo.org/index.php/Ratchaphruekjournal/article/view/247529.