| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Perspectives | Paperback | 978-1-320-01489-2 | 2008 |
| Perspectives | Hardcover | 978-1-320-01490-8 | 2008 |
| The Long Way Home | Paperback | 978-1-320-01483-0 | 2009 |
| The Long Way Home | Hardcover | 978-1-320-01484-7 | 2009 |
| Viewed from Afar | Paperback | 978-1-320-01487-8 | 2007 |
| Viewed from Afar | Hardcover | 978-1-320-01488-5 | 2007 |