al-Tamawi, Sulayman Muhammad, <br/><br/>
Umar ibn al-Khattab wa usul al-siyasah wa al-idarah al-hadithah  dirasat maqaranah 
Sulayman Muhammad al-Tamawi. 
 - 1st edition 
 - al-Qahirah:  Dar al-Fikr al-'Arabi,  1969. 
 - 512 pages  ;  24 cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>'Umar ibn al-Khattab, Caliph,  d.644