| title | ISBN-13 | year of publication |
|---|---|---|
| Guida ai giardini storici 2009 | 978-88-370-6844-8 | 2009 |
| Italian Gardens | 978-0-8478-2495-3 | 2002 |
| Mermaid Dreams | 978-0-9728958-3-5 | 2005 |
| The Mermaid's Gift | 978-0-9728958-1-1 | 2004 |
| The Secret of Mermaid Island | 978-0-9728958-0-4 | 2018 |
Mondadori Electa · Riley Press · Rizzoli