Oxford University Press · Quodlibet
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Catholic Modernists: A Study of the Religious Reform Movement, 1864-1907 | 978-0-19-213944-3 (0-19-213944-4) | 1969 |
| L'ospite ingrato. Semestrale del Centro studi Franco Fortini | 978-88-7462-111-8 (88-7462-111-6) | 2006 |