Robert F. Kenny and  Glenda A. Gunter,  Endogenous Fantasy – Based Serious Games: Intrinsic Motivation and Learning.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2007, vol. 11(11). 591 - 596
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/13506.