| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Online Marketing: A Customer-Led Approach | 978-0-19-923900-9 (0-19-923900-2) | 2012 | Richard Gay · Alan Charlesworth |
| Online Marketing: A Customer-Led Approach | 978-0-19-926585-5 (0-19-926585-2) | 2007 | Richard Gay · Alan Charlesworth |