Han, Chunwei, and Jinyan Huang. “Effect of ‘Internet+’ 5G Information Technology on Blended Teaching: A Test Based on Counterfactual Method”. International Journal of Emerging Technologies in Learning (iJET) 17, no. 23 (December 8, 2022): pp. 192–207. Accessed May 2, 2024. https://online-journals.org/index.php/i-jet/article/view/36025.