Daryaee & Rezakhani 2017, p. 209. Daryaee, Touraj; Rezakhani, Khodadad (2017). "The Sasanian Empire". In Daryaee, Touraj (ed.). King of the Seven Climes: A History of the Ancient Iranian World (3000 BCE - 651 CE). UCI Jordan Center for Persian Studies. pp. 1–236. ISBN9780692864401.
McDonough 2011, p. 307. McDonough, Scott (2011). "The Legs of the Throne: Kings, Elites, and Subjects in Sasanian Iran". In Arnason, Johann P.; Raaflaub, Kurt A. (eds.). The Roman Empire in Context: Historical and Comparative Perspectives. John Wiley & Sons, Ltd. pp. 290–321. doi:10.1002/9781444390186.ch13. ISBN9781444390186.
McDonough 2011, p. 305. McDonough, Scott (2011). "The Legs of the Throne: Kings, Elites, and Subjects in Sasanian Iran". In Arnason, Johann P.; Raaflaub, Kurt A. (eds.). The Roman Empire in Context: Historical and Comparative Perspectives. John Wiley & Sons, Ltd. pp. 290–321. doi:10.1002/9781444390186.ch13. ISBN9781444390186.
McDonough 2011, p. 306. McDonough, Scott (2011). "The Legs of the Throne: Kings, Elites, and Subjects in Sasanian Iran". In Arnason, Johann P.; Raaflaub, Kurt A. (eds.). The Roman Empire in Context: Historical and Comparative Perspectives. John Wiley & Sons, Ltd. pp. 290–321. doi:10.1002/9781444390186.ch13. ISBN9781444390186.
McDonough 2013, p. 604 "The backbone of Sasanian military power, the Iranian ('Aryan') cavalry, was, for lack of a more accurate term, a 'feudal' army organized around the banners of the aristocratic azadan ('the free'), most prominently the vuzurgan ('great families') of Parthian descent". McDonough, Scott (2013). "Military and Society in Sasanian Iran". In Campbell, Brian; Tritle, Lawrence A. (eds.). The Oxford Handbook of Warfare in the Classical World. Oxford University Press. pp. 1–783. ISBN9780195304657.