Gaya APA

Ash-Shallabi, A, M. (). The Rightly-Guided Caliph and Great Reviver "Umar Bin Abdul Aziz" : Indicators of Renewal and Guided Reformation on the Prophetic Path . Riyadh: Darussalam.

Gaya MLA

Ash-Shallabi, Ali, Muhammad. "The Rightly-Guided Caliph and Great Reviver "Umar Bin Abdul Aziz" : Indicators of Renewal and Guided Reformation on the Prophetic Path". Riyadh: Darussalam, . Elektronik/Digital.