Zhao, Fang, Wolfgang Schnotz, Inga Wagner, and Robert Gaschler. “Eye Tracking Indicators of Reading Approaches in Text-Picture Comprehension”. Frontline Learning Research 2, no. 5 (October 27, 2014): 46–66. Accessed May 28, 2022. https://journals.sfu.ca/flr/index.php/journal/article/view/98.