Assaf, Mahmoud A. R. “The Quality of Technical and Vocational Higher Education Environment in the Palestinian Gaza Governorate in Light of Six Sigma Principles and Ways to Improve It”. The Arab Journal For Quality Assurance in Higher Education 11, no. 38 (December 23, 2018): 29–59. Accessed December 19, 2024. https://journals.ust.edu/index.php/AJQAHE/article/view/1432.