Smith, W. R. Religion of the Semites (2d ed., London, 1894); Kinship and Marriage in Early Arabia (2d ed., London, 1903).
Barton, G. A. A Sketch of Semitic Origins (New York and London, 1902).
Curtiss, S. I. Primitive Semitic Religion To-day (London, 1902).
Lagrange, M. J. Études sur les religions sémitiques (2d ed., Paris, 1905).
Arabian
Sale, G. Preliminary Discourse to Translation of the Koran (1734; new ed., London, 1857) (and in Wherry's Commentary on the Quran, London, 1882).
Sprenger, A. Das Leben und die Lehre des Mohammeds (Berlin, 1861-1865).
Syed, Ahmed. Essays on the Life of Mohammed and Subjects Subsidiary thereto (London, 1870).
Ameer, Ali. Life and Teachings of Mohammed, or the Spirit of Islam (London, 1873); Islam (London, 1897).
Tassy, Garcin de. L'Islamisme d'après le Coran (Paris, 1874).