The Sufi Orders in Islam
TRIMINGHAM, J. Spencer
The Sufi Orders in Islam - Reprint - Oxford OUP 1998
978-0195120585
Islamic sects
Mysticism--Islam--History
Sufism
The Sufi Orders in Islam - Reprint - Oxford OUP 1998
978-0195120585
Islamic sects
Mysticism--Islam--History
Sufism