Wiley-VCH · Willi Vock · Willi Voss
| title | ISBN-13 | year of publication |
|---|---|---|
| Mere Theology: A Guide to the Thought of C. S. Lewis | 978-0-8308-2782-4 | 2004 |
| Speaking of Jack: A C. S. Lewis Discussion Guide | 978-1-936294-12-1 | 2011 |
| The Hidden Story of Narnia: A Book-By-Book Guide to C. S. Lewis' Spiritual Themes | 978-1-936294-02-2 | 2010 |
| The Professor of Narnia: The C.S. Lewis Story | 978-0-9817061-0-8 | 2008 |
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