Dave Pinfield

• Blackstone's Police Investigators' Mock Examination Paper 2010
• Blackstone's Police Investigators' Workbook 2010
• Blackstone's Police Investigators' Manual and Workbook 2010
• Blackstone's Police Investigators' Manual and Workbook 2012
• Blackstone's Police Investigators' Workbook 2011
• Blackstone's Police Investigators' Workbook 2012