Aḥmad ʻAbd Allāh ʻĀrif

• al- Ṣilah al-zaydīyah wa-al-muʻtazilah
• al-Ṣilah bayna al-zaydīyah wa-al-muʻtazilah
• Muqaddimah fī dirāsat al-ittijāhāt al-fikrīyah wa-al-siyāsīyah fī al-Yaman