Irving, T. B. (1980). Falcon on Spain: A study of eighth-century Spain with special emphasis upon the life of the umayyad ruler.''abdur rahman I (756-788) (4th ed.). Ashraf.

Irving, Thomas Ballantine. Falcon on Spain: A Study of Eighth-century Spain with Special Emphasis upon the Life of the Umayyad Ruler.''abdur Rahman I (756-788). 4th ed. Lahore: Ashraf, 1980.

Irving, Thomas Ballantine. Falcon on Spain: A Study of Eighth-century Spain with Special Emphasis upon the Life of the Umayyad Ruler.''abdur Rahman I (756-788). 4th ed. Ashraf, 1980.