Yingxin, X. ., C. K. S. Singh, S. K. J. C. . Singh, R. P. . Bailey, and K. . Arivayagan. “The Digital Classroom: Systematic Review of Use of English As a Foreign Language (EFL) in Teaching in Collaborative Online Settings”. International Journal of Learning, Teaching and Educational Research, vol. 23, no. 10, Oct. 2024, pp. 1-26, http://www.ijlter.net/index.php/ijlter/article/view/2080.