C Hurst & Co Publishers Ltd · Northwestern University Press
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Letters of Ahmad Ibn Idris | 978-0-8101-1070-0 (0-8101-1070-9) | 1993 | Einar Thomassen · Bernd Radtke · R. S. O'Fahey · Albrecht Hofheinz |
| The Sufi Brotherhoods in the Sudan | 978-0-8101-1045-8 (0-8101-1045-8) | 1992 | |
| The Sufi Brotherhoods in the Sudan | 978-1-85065-111-6 (1-85065-111-6) | 1992 | |