Jeongim Kang and  Moon Hee Kim and  Seong Baeg Kim,  An Online Mastery Learning Method Based On a  Dynamic Formative Evaluation.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 86(2). 503 - 506
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9997512.