| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| A Short History of the Papacy in the Middle Ages | Hardcover | 978-1-138-13614-4 | 2016 | |
| A Short History of the Papacy in the Middle Ages | Paperback | 978-0-415-30227-2 | 2002 | |
| Il papato nel Medioevo | Copertina flessibile | 978-88-420-5844-1 | 1999 | |
| Jurisprudence in the Middle Ages | Hardcover | 978-0-86078-065-6 | 1980 | |
| Law and Jurisdiction in the Middle Ages | " | 978-0-86078-231-5 | 1988 | George Garnett |
| Law and Politics in Middle Ages | Paperback | 978-0-521-29157-6 | 2008 | |
| Law and Politics in Middle Ages | Hardcover | 978-0-521-21459-9 | 1976 | |
| Medieval Political Thought | Paperback | 978-0-14-055102-0 | 1976 | |
| Principles of government and politics in the Middle Ages | " | 978-0-06-477195-5 | 1974 | |
| Scholarship and Politics in the Middle Ages | Hardcover | 978-0-86078-017-5 | 1977 | |
| The Relevance of Medieval Ecclesiastical History: An Inaugural Lecture | Paperback | 978-0-521-06665-5 | 1966 | |
Cambridge University Press · HarperCollins · Laterza · Penguin · Routledge