الخليفه الذي لقب بالفاروق

by Shaykh Sayyed Muhammad bin Yahya Al-Husayni Al-Ninowy	0, Koninklijke Brill NV, Leiden, The Netherlands 1999"• Bonner "Umar" in Encyclopedia of Islam CD-ROM Edition v
	The Shorter Cambridge Medieval History

الخلفاء الراشدون

Donner, Fred, The Early Islamic Conquests, Princeton University Press, 1981.

عمر بن الخطاب: , , Faber and Faber, 1991
الخلفاء الراشدون: The first window from the right gives a view of Umar's grave
الخلفاء الراشدون: Madelung, Wilferd, The Succession to Muhammad, Cambridge University Press, 1997

, The Life of Muhammad, Oxford University Press, 1955