Ahmed Natto, Hawazin Mohammed. “Service Quality Gap Model As a Predictor of Customer Satisfaction Among People With Disabilities in Vocational Rehabilitation Centers”. Journal of Intellectual Disability - Diagnosis and Treatment 10, no. 2 (April 21, 2022): 87–94. Accessed January 29, 2026. https://lifescienceglobal.com/pms/index.php/jiddt/article/view/8666.