WASET
    Janet Holland,  Eye Tracking: Biometric Evaluations of Instructional Materials for Improved Learning .   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    June 2019, vol. 151(7). 1013 - 1020
    [viewed 11 May 2024]. Available from: https://publications.waset.org/pdf/10010606.