Lai, Chien-Hung, Bin-Shyan Jong, Yen-Teh Hsia, and Tsong-Wuu Lin. “Use of a Mobile Anonymous Question-Raising System to Assist Flipped-Classroom Learning”. International Journal of Interactive Mobile Technologies (iJIM) 14, no. 03 (February 28, 2020): pp. 66–81. Accessed May 2, 2024. https://online-journals.org/index.php/i-jim/article/view/11722.