WASET
    Wala A. Bagunaid and  Maram Meccawy and  Arwa Allinjawi and  Zilal Meccawy,  The Impact of Gamification on Self-Assessment for English Language Learners in Saudi Arabia.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2019, vol. 146(2). 129 - 134
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10009994.