Mostly Harmless (Hitchhiker's Guide to the Galaxy Book 5)
| Country | USA |
| Brand | Westminster John Knox Press |
| Manufacturer | Westminster John Knox Press |
| Binding | Hardcover |
| ItemPartNumber | black & white illustrations |
| ReleaseDate | 2016-02-11 |
| UnitCount | 1 |
| EANs | 9780664232627 |