Cambridge University Press · Random House
| title | media type | ISBN-13 | year of publica- tion |
|---|---|---|---|
| Psychovertical | Paperback | 978-0-09-951952-2 | 2009 |
| Psychovertical | Hardcover | 978-0-09-192096-8 | 2008 |
| World Englishes: Implications for International Communication and English Language Teaching | Paperback | 978-0-521-61687-4 | 2007 |
| World Englishes: Implications for International Communication and English Language Teaching | Hardcover | 978-0-521-85147-3 | 2007 |