كريم رسل, صبير هدى, and حميد فوزي. “The Principle of Quality of Public Utilities - a Comparative Study”. Ibn Khaldoun Journal for Studies and Researches 2, no. 8 (May 21, 2024). Accessed May 18, 2026. https://www.benkjournal.com/benkj/article/view/880.