^The Expansion of the Saracens-The East, C.H. Becker, The Cambridge Medieval History: The Rise of the Saracens and the Foundation of the Western Empire, Vol. 2, ed. John Bagnell Bury, (MacMillan Company, 1913), 348.
^Iran, Arab Conquest of (636-671), Adam Ali, Conflict and Conquest in the Islamic World: A Historical Encyclopedia, Vol.1, ed. Alexander Mikaberidze, (ABC-CLIO, 2011), 406.
^Parvaneh Pourshariati, Decline and Fall of the Sasanian Empire, (I.B.Tauris, 2009), 216.
^Iran in the Early Islamic Period, Michael G. Morony, The Oxford Handbook of Iranian History, ed. Touraj Daryaee, (Oxford University Press, 2012), 211.
^Iran in the Early Islamic Period, Michael G. Morony, The Oxford Handbook of Iranian History, 211.