Sukachart, Nikorn, and Chitnarong Lamsam-ang. 2022. “Evaluation of the training program for the development of educational personnel for learning in the 21st century through online system”. RMUTSB ACADEMIC JOURNAL (HUMANITIES AND SOCIAL SCIENCES) 7 (2). ฺBangkok, Thailand:196-205. https://so05.tci-thaijo.org/index.php/rmutsb-hs/article/view/255137.