Al-Qralleh, A. M. ., B. A. . Mismar, and M. . Matarneh. “The Level of Acquisition Pertaining to Concepts of Knowledge Economy Among Physical Education Supervisors in Al-Karak Directorate of Education”. Dirasat: Educational Sciences, vol. 47, no. 1, Mar. 2020, pp. 618-32, https://dsr.ju.edu.jo/djournals/index.php/Edu/article/view/5279.