Khalil,'Imad al-Din. <br/><br/>
Malamih al-inqilab al-Islami :  fi Khilafah'Umar ibn'Abd al-'Aziz / 
'Imad al-Din Khalil. 
 - 2nd ed. 
 - Beirut :  Al-Dar al-'alamiyah,  1971. 
 - 211 p. ;  24 cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>'Umar ibn'Abd al-'Aziz, Caliph,  d.720. 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Islamic Empire--History.