Volume VI. Christianity in Arabia prior to Islam, Sections 79-82, pp. 582-690; In Series: The Comprehensive History of Arabs prior to Islam. 0.6 MB

Proof of the Crucifixion of Christ by Historical Evidence and Correct Testimony, Cairo, 1923, pp. 67.

The Moslem Christ, pp. 179.

Historical Memoranda on Campaign of Ibrahīm Pāshā in Syria

The Directions of the Islamic Koran Interpretation (Die Richtungen Der Islamischen Koranauslegung)

The Death Of The Perfect Man From Various Perspectives

The Apology of al-Kindy with the Commentaries of William Muir, pp. 125.

The Apology of Al-Kindy, pp. 172.

The Sources Of Islam, pp. 141, 1925