Cambridge University Press · PIMS
| title | ISBN-13 (ISBN-10) | year of publica- tion |
|---|---|---|
| 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 · Jonathan A. Watt