United nations development programme office of projects execution. (1983). Regional development planning region 8: Revised draft final report. Dar Al-Handasah consultants.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)United nations development programme office of projects execution. Regional Development Planning Region 8: Revised Draft Final Report. Cairo: Dar Al-Handasah consultants, 1983.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)United nations development programme office of projects execution. Regional Development Planning Region 8: Revised Draft Final Report. Dar Al-Handasah consultants, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.