Smith, Margaret,  1884- <br/><br/>
An early mystic of Baghdad :  a study of the life and teaching of Harith B. Asad al-Muhasibi, A.D.781-A.D.857 
by Margaret Smith 
 - New York  AMS Press  1973 
 - xi, 311 p.  ; 22 cm. 
<br/><br/> Terbitan asal 1935, oleh Sheldon Press, London. 
<br/><br/><label>ISBN: </label>0404563244 
<br/><br/><label>Subjects--Personal Names: </label><br/>al-Muhasibi, al-Harith ibn Asad, d.857 or 8