| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Traffic Signs Manual: The Design of Traffic Signs Chapter 7 | 978-O-11-55248O-6 (O-11-55248O-O) | 2003 | The Stationery Office · Great Britain: Department for Transport · The Scottish Executive · The National Assembly for Wales |