El-Naggar, Z. R. (1991). The geological concept of mountains in the Qur'an: Sources of scientific knowledge (First edition.). International Institute of Islamic Thought.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)El-Naggar, Z. R. The Geological Concept of Mountains in the Qur'an: Sources of Scientific Knowledge. First edition. Herndon, Va., U.S.A.: International Institute of Islamic Thought, 1991.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)El-Naggar, Z. R. The Geological Concept of Mountains in the Qur'an: Sources of Scientific Knowledge. First edition. International Institute of Islamic Thought, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.