Kang, Woonsun, and Jaewoo Choi. “Barriers on Using Social Media As Learning Tools Among Korean Pre-Service Social Studies Teachers”. International Journal of Engineering & Technology 7, no. 3.7 (July 4, 2018): 522–524. Accessed April 27, 2024. https://sciencepubco.com/index.php/ijet/article/view/19041.