| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Blackstone's Police Investigator's Distance Learning Workbook 2004 | 978-0-19-927103-0 | 2004 | |
| Blackstone's Police Investigator's Distance Learning Workbook 2005 | 978-0-19-927539-7 | 2004 | |
| Blackstone's Police Investigator's Manual and Distance Learning Workbook 2004 | 978-0-19-927104-7 | 2003 | Glenn Hutton · David Johnston Governor General of Canada |
| Blackstone's Police Investigator's Manual: AND Distance Learning Workbook | 978-0-19-927554-0 | 2004 | Glenn Hutton · David Johnston Governor General of Canada |
| Police investigator's distance learning manual | 978-0-19-925826-0 | 2003 | |