حافظعبد الناصر, and مثنىمازن. “Performance Evaluation for Higher and Medium Leadership in Institutional Work Quality.”. Journal of Economics and Administrative Sciences 22, no. 90 (July 1, 2016): 123. Accessed August 18, 2021. https://jeasiq.uobaghdad.edu.iq/index.php/JEASIQ/article/view/502.