Khiḍr Aḥmad ʻAṭā Allāh

• al- Ḥayāh al-fikrīyah fī Miṣr fī al-ʻasr al-Fāṭimī
• Bayt al-Ḥikmah fī ʻaṣr al-ʻAbbāsīyīn