ALYAN, W. S. (2018). Influence of Project Managers Perception on The Success of Projects in Relation To Early Engagement of contractors And Suppliers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)ALYAN, WAEL SALEEM. Influence of Project Managers Perception on The Success of Projects in Relation To Early Engagement of Contractors And Suppliers. 2018.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)ALYAN, WAEL SALEEM. Influence of Project Managers Perception on The Success of Projects in Relation To Early Engagement of Contractors And Suppliers. 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.