WASET
    Sophie Huck and  Knut Linke,  Integration of Best Practices and Requirements for Preliminary E-Learning Courses.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    February 2016, vol. 111(3). 966 - 973
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10004177.