Maulvi Abdul Aziz <br/><br/>
History of Islam- Umar Bin al- Khattab (R.A) 

 - Riyadh  Maktaba Dar-as-Salam  2012 
 - 142 
<br/><br/><label>ISBN: </label>9786035000772 
<br/><br/><label>Dewey Class. No.: </label>297  / AZI