'Ayyad, Ahmad Tawfiq. <br/><br/>
al-Tasawwuf al-Islami : tarikhuhu wa madarisuhu wa tabi'atuhu wa'athruhu Tasawwuf al-Islami :  tarikhuhu wa madarisuhu wa tabi'atuhu wa'athruhu / 
ta'lif Ahmad Tawfiq'Ayyad. 
 - al-Qahirah :  Maktabat al-Injilu al-Misriyah,  1970. 
 - 335 pages ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sufism.<br/>Mysticism--Islam.