WASET
    Belma Turker and  Cigdem Alkas and  Ebru Aylar and  Ramazan Gurel and  Oylum Akkus Ispir,  The Views of Elementary Mathematics Education Preservice Teachers on Proving.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 1558 - 1562
    [viewed 28 March 2024]. Available from: https://publications.waset.org/pdf/11751.