| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Unofficial Guide to Central Italy: Florence, Rome, Tuscany and Umbria | 978-O-47O-229OO-2 (O-47O-229OO-4) | 2008 | Kenneth A. Holbrook · Michael J. Pilling |
S H · S H Robertson · S R · S. Robertson · Struan Robertson