Al-Tanzimat al-Idariyya wa al-Maliyya fi al-Dawla al-Arabiyya al-Islamiyya fi al-Asr al-Umawi (Administrative and Financial Organization in the Arab Islamic State in the Umayyad Era)
A study of the administrative and financial institutions of the Arab-Islamic state: bureaus, governorship, tax collection and the treasury, and their development since early Islam.
Ahmad Ubayd al-Juburi