WASET
    A. Zimnas and  D. Kleftouris and  N. Valkanos,  IDEL - A simple Instructional Design Tool for E-Learning.   journal   = {International Journal of Information and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2009, vol. 25(1). 7 - 13
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/15080.