Ali Rashash Alzahrani and  Elizabeth Stojanovski,  Multivariate Assessment of Mathematics Test Scores of Students in Qatar.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2018, vol. 144(12). 1668 - 1671
    [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/10009902.