Church history
6 books
Les aventurières du Sinaï
2010
ISBN 9782709623780
A Dictionary of Hymnology
1892
- No cover
The Persecution of Christians Concerns Us All
2001
ISBN 9783932829413 
The History of the Church: From Christ to Constantine
ISBN 9780806615097- No cover
Beretningen om Hamburg stift, erkebiskopenes bedrifter og øyrikene i Norden
1993
ISBN 9788203200281 - No cover
Catholicism
2003
ISBN 9780191602122