علي خير صابر و حافظ ابوبكر امحمد و نوارة محمد الفيتوري. Using Statistical Quality Control Charts for Measuring Educational Service Quality at Sebha University from the Viewpoint of Students. JOPAS [Internet]. 2019 Nov. 25 [cited 2024 Nov. 23];18(4). Available from: https://sebhau.edu.ly/journal/jopas/article/view/432