al-Ṣiddīq ʻUmar Yaʻqūb

• Buḥūth wa-dirāsāt fī al-ʻaqīdah wa-al-fikr wa-al-daʻwah
• Muqāranat adyān muṣṭalaḥāt al-ʻaqīdah fī mabāḥith al-ilahīyyāt bayna ʻilm al-kalām wa-ʻilm al-lāhūt