| title | ISBN-13 | year of publication |
|---|---|---|
| Duffers Guide to the Old Testament: The Tutorial Notes of Michael Alexander | 978-0-551-02947-7 | 1996 |
| Duffer's Guide to Theology: The tutorial notes of Michael Alexander | 978-0-551-03075-6 | 1997 |
| The Duffer's Guide to the Early Church: The Tutorial Notes of Michael Alexander | 978-0-551-02914-9 | 1995 |
| The Duffer's Guide to the Medieval Church: The Tutorial Notes of Michael Alexander | 978-0-551-03011-4 | 1995 |