Shibli Numani, S. U. (1943). Omar the great (the second Caliph of Islam) (2nd ed.). Sh. Muhammad Asraf.
Cita Chicago (17th ed.)Shibli Numani, Shamsul' Ulama'. Omar the Great (the Second Caliph of Islam). 2nd ed. Lahore: Sh. Muhammad Asraf, 1943.
Cita MLA (9th ed.)Shibli Numani, Shamsul' Ulama'. Omar the Great (the Second Caliph of Islam). 2nd ed. Sh. Muhammad Asraf, 1943.
Atenció: Aquestes cites poden no estar 100% correctes.