| title | ISBN-13 | year of publication | |
|---|---|---|---|
| Empire | 978-0-521-07979-2 | 2008 | |
| Imperialism: The Storyand Significance of a Political Word, 1840-1960 | 978-0-521-13482-8 | 2010 | |
| Imperialism: The Storyand Significance of a Political Word, 1840–1960 | 978-0-521-05491-1 | 1964 | |
| Studies in Mediaeval and Modern Thought and Literature | 978-0-19-647158-7 | 1955 | |
| Venantius Fortunatus, seine Persönlichkeit und seine Stellung in der geistigen Kultur des Merowinger-Reiches. | 978-3-8067-0120-3 |
Cambridge University Press · Gerstenberg · Oxford University Press