TEXTS ON THE UNIVERSALITY OF SUFISM
- The Origin of Sufism by Sufi Inayat Khan
- Sufism: Wisdom Of All Faiths by Sufi Inayat Khan
- The Unity of Knowledge by Idries Shah
- Origins and Nature of the Sufis by Robert Graves
- Only Breath by Jelaluddin Rumi
- Garden Among the Flames by Ibn ‘Arabi