Vol. 2 — Prophet of Mercy & Qur’an of Muslims: Study on Society of Mecca — Beirut, Lebanon, 1985, pp. 207.

Vol. 1 — A Priest, A Prophet: Study on the Origin of Islam — Beirut, Lebanon, 1979, pp. 173.

The Philosophy of Christianity – St. Paul and his Letters, pp. 305-800

The Philosophy of Christianity – St. Paul and his Letters, pp. 1-304

The Gospel & The Qur’an Biblical quotations from Van Dyke translation, pp. 116

The Gospel & The Qur’an Biblical quotations as translated by the author, pp. 116

The Mysticism of Christianity – 2. Revelation of Jesus Christ, pp. 287

The Mysticism of Christianity – 1. Gospel according to John, pp. 545

The History of Christianity – 2. Acts of the Apostles, pp. 285