| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Cambridge Contributions | Printed Access Code | 978-0-511-56127-6 (0-511-56127-X) | 2009 |
| Cambridge Contributions | Paperback | 978-0-521-59738-8 (0-521-59738-2) | 2008 |
| Cambridge Contributions | Hardcover | 978-0-521-59243-7 (0-521-59243-7) | 1998 |