Dirasat al-'alaqah bayna al-fikr wa al-mumarasah qiyadat'Umar ibn'Abd al-'Aziz namudhajan - 'Abd al-Kafi, Isra''Imran Ahmad (al-Qahirah : Dar al-Salam, 2011)
Originally presented as the author's thesis (M.A)
Keywords: 'Umar -- II, -- Caliph, -- d. 720; Islam and state; Islam and politics; Leadership -- Religious aspects -- Islam