Ko, Youngmin, Yukyeong Lee, Daeyoung Kim, and Hanil Kim. “Analysis of Recognition and Educational Needs on Competency of Secondary School Informatics Teachers”. International Journal on Advanced Science, Engineering and Information Technology 7, no. 5 (October 26, 2017): 1632–1637. Accessed July 22, 2024. https://ijaseit.insightsociety.org/index.php/ijaseit/article/view/2667.