أبوخذير فتحي المهدي الفيتوري. 2025. “The Effectiveness of Maintenance Planning in Oil Institutions (An Analytical Study of Al-Zawiya Oil Refining Company)”. Al-Qurtas Journal for Human and Applied Sciences 4 (27). https://alqurtas.alandalus-libya.org.ly/ojs/index.php/qjhar/article/view/1407.