Wannapiroon , Panita, Prachyanun Nilsook, Jira Jitsupa, and Sakchai Chaiyarak. 2022. “Digital Competences of Vocational Instructors With Synchronous Online Learning in Next Normal Education”. International Journal of Instruction 15 (1):293-310. https://e-iji.net/ats/index.php/pub/article/view/447.