WASET
    Sadık Kartal,  Primary School Principles- Views about In-service Training Activities.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 1631 - 1636
    [viewed 07 May 2024]. Available from: https://publications.waset.org/pdf/5527.