Wan Ji Wan Husin,  1982- <br/><br/>
Kezuhudan Umar Abdul Aziz, kesederhanaan Nik Abdul Aziz / 
Wan Ji Wan Husin, Saifulamri M. Hussin. 
 - Edisi kemaskini 
 - Sungai Buloh, Selangor :  Kemilau Publika,  2013. 
 - xxxviii,  191 p. :  ill. ;  22 cm. 
<br/><br/>Bibliografi : p. [192] 
<br/><br/><label>ISBN: </label>9789673610884  RM18.00 
<br/><br/><label>Subjects--Personal Names: </label><br/>'Umar ibn'Abd al-'Aziz, Caliph,  d. 720 <br/>Nik Abdul Aziz Nik Mat, Dato' Haji,  1931-2015 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Islamic leadership<br/>Leadership--Religious aspects--Islam