| title | media type | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Complete 21st Century Travel Marketing Handbook, The | Paperback | 978-0-13-113314-3 (0-13-113314-4) | 2004 | Andy M. Vladimir |
| Selling the Sea: An Inside Look at the Cruise Industry | " | 978-0-471-74918-9 (0-471-74918-4) | 2007 | Andy Vladimir |
| Selling the Sea: An Inside Look at the Cruise Industry | Hardcover | 978-0-471-12001-8 (0-471-12001-4) | 1996 | " |