Zuhal Zeybekoglu Calıskan and  Erkan Tabancali,  New Curriculum and New Challenges: What do School Administrators Really Do?.   journal   = {International Journal of Educational and Pedagogical Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2009, vol. 31(7). 1361 - 1365
    [viewed 14 October 2019]. Available from: https://publications.waset.org/pdf/9315.