Kuromiya, H., R. Majumdar, G. Miyabe, and H. Hiroaki. “E-Book-Based Learning Activity During COVID-19: Engagement Behaviors and Perceptions of Japanese Junior-High School Students”. Research and Practice in Technology Enhanced Learning, vol. 17, June 2022, https://rptel.apsce.net/index.php/RPTEL/article/view/2022-17012.