Sukker, N. R. “The Degree of Practice of The Heads of The Academic Departments at Al-Aqsa University to Manage Excellence and Its Relation to Level of Improvement in Professional Performance of The Teaching Staff”. The Arab Journal For Quality Assurance in Higher Education, vol. 11, no. 35, July 2018, pp. 123-54, doi:10.20428/ajqahe.v11i35.1346.