Nicholson, Reynold A. <br/><br/>
The mystics of Islam. 

 - London :  Routledge & K. Paul,  [1914] 
<br/><br/>Bibliography: p. 169-171. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mysticism -- Islam.--Mysticism -- Islam.<br/>Sufism.<br/>Philosophy, Arab.