Institute National Planning. (1993). the current development in the methodolocy and applications of operations research obstacles and prospects in dveloping countries . Institute National Planning.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Institute National Planning. The Current Development in the Methodolocy and Applications of Operations Research Obstacles and Prospects in Dveloping Countries . cairo: Institute National Planning, 1993.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Institute National Planning. The Current Development in the Methodolocy and Applications of Operations Research Obstacles and Prospects in Dveloping Countries . Institute National Planning, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.