ʻAbd Allāh Muḥammad Sayf

• al- Ḥayāh al-iqtiṣādīyah wa-al-ijtimāʻīyah fī Najd wa-al-Ḥijāz fī al-ʻaṣr al-Umawī
• al-Ḥiraf al-ṣināʻīyah fī al-Jazīrah al-ʻArabīyah, 41-350 H/661-960 M
• al-Nashāṭ al-zirāʻī fī al-Jazīrah al-ʻArabīyah fī al-ʻaṣr al-ʻAbbāsī ḥattá nihāyat al-qarn al-rābiʻ al-hijrī
• Mawāqif al-sukkān fī diyār Banī Ḥanīfah min al-riddah fī al-Yamāmah