| Titel | ISBN-13 (ISBN-10) | Erscheinungsjahr |
|---|---|---|
| Missionaries Go Home?: A Sociological Interpretation of an African Response to Christian Missions | 978-3-261-03874-6 (3-261-03874-8) | 1989 |
| Readings in African Traditional Religion: Structure, Meaning, Relevance, Future | 978-3-261-03911-8 (3-261-03911-6) | 1991 |