| title | media type | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|---|
| Research in Practice for Forensic Professionals | Hardcover | 978-0-415-67271-9 | 2011 | Jason Davies · Kevin Howells |
| Research in Practice for Forensic Professionals | Paperback | 978-0-415-67272-6 | 2011 | |
| Sex Offenders and the Internet | Hardcover | 978-0-470-02800-1 | 2007 | Dennis Howitt |
| Sex Offenders and the Internet | Paperback | 978-0-470-02801-8 | 2007 | " |