Fahad, Badrī Muḥammad. <br/><br/>
al-Khalīfah al-mughannī :  Ibrāhīm bin al-Mahdī, 126-224 h. / 
Badrī Muḥammad Fahad. 
 - Baghdād :  al-Irshad,  1967. 
 - 5, 266 p. ;  25 cm. 
<br/><br/> In Arabic. 
<br/><br/><label>LCCN: </label>ne 67001308  
<br/><br/><label>Subjects--Personal Names: </label><br/>Ibrāhīm ibn al-Mahdī, 779-839. 
<br/><br/><label>LC Class. No.: </label>ML420.I27  / F3