Khalid Umar ad-Disuqi. <br/><br/>
Optimislah :  anda memiliki semuanya / 
Dr. Khalid Umar ad-Disuqi. 
 - Jakarta :  Magfirah Pustaka,  2005. 
 - 271 p. ;  22 cm. 
<br/><br/><label>ISBN: </label>9799793962114 (hbk.)    
<br/><br/><label>Subjects--Topical Terms: </label><br/>Optimism.<br/>Muslims -- Religious life.