| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Medii aevi kalendarium: Or, Dates, charters, and customs of the Middle Ages: with kalendars from the tenth to the fifteenth century, and an ... tables and other aids for ascertaining dates | 978-O-4O4-15418-9 (O-4O4-15418-2) | 1978 |