Center for Economic and Financial Research and Studies. ( Cairo, Center for Economic and Financial Research and Studies, nassar, h., & aziz, a. (2000). Egyptian Exports and Challenges of the 21th Century. CEFRS.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Center for Economic and Financial Research and Studies. ( Cairo, Center for Economic and Financial Research and Studies, heba nassar, و alfonse aziz. Egyptian Exports and Challenges of the 21th Century. Cairo: CEFRS, 2000.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Center for Economic and Financial Research and Studies. ( Cairo, et al. Egyptian Exports and Challenges of the 21th Century. CEFRS, 2000.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.