| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Now or Never: How Companies Must Change Today to Win the Battle for Internet Consumers | 978-0-06-662013-8 (0-06-662013-9) | 2001 |
| Now or Never: How Companies Must Change to Win the Battle for Internet Consumers | 978-0-06-662012-1 (0-06-662012-0) | 1999 |