Cambridge University Press · Pontifical Institute of Mediaeval Studies
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Church/Two Nations Medieval Ireland | 978-0-521-61919-6 (0-521-61919-X) | 2008 |
| On Royal and Papal Power | 978-0-88844-258-1 (0-88844-258-0) | 1971 |
| The Church and the Two Nations in Medieval Ireland | 978-0-521-07738-5 (0-521-07738-9) | 1970 |
A. W. · J. A. · J. W. · J Watt · John A. Watt · JOHN & CHARLES WATT · Jonathan A. Watt