Veronica Diaz Quezada,  The Competence of Solving Mathematical Problems in the Formation of Ethical Values.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    November 2018, vol. 144(12). 1672 - 1677
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/10009904.