Catedra · McGraw-Hill · Thames & Hudson
| title | ISBN-13 | year of publica- tion |
|---|---|---|
| Arte Sacro, 800-1200 | 978-84-376-1757-2 | 2004 |
| Kingdom of the Franks | 978-0-07-036499-8 | 1972 |
| The kingdom of the Franks: north-west Europe before Charlemagne | 978-0-07-036498-1 | 1971 |
| The kingdom of the Franks;: North-west Europe before Charlemagne | 978-0-500-57003-6 | 1971 |