Nicholson, Reynold A., <br/><br/>
Studies in Islamic Mysticism : 

 -  Genesis Publishing Pvt Ltd,  2004. 
 - 304 pages 
<br/><br/><label>ISBN: </label>8177557580 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sufism.
<br/><br/><label>Dewey Class. No.: </label>297.4  / NIC