- Author: Michael Dallas, Office of Government Commerce, Stephanie Clackworthy
- Language: English
- Year: 2010
- Author: Office of Government Commerce
- Language: English
- Year: 2002
- Author: Great Britain. Office of Government Commerce
- Language: English
- Year: 2011
- Author: Great Britain. Office of Government Commerce
- Language: English
- Year: 2011
- Author: OGC Office of Government Commerce
- Language: English
- Year: 2010
- Author: Office of Government Commerce (OGC)
- Language: English
- Year: 2009
- Author: Great Britain. Office of Government Commerce
- Language: English
- Year: 2007
- Author: Vernon Lloyd, Sharon Taylor, Stationery Office. ., Great Britain. Office of Government Commerce
- Language: English
- Year: 2011
- Author: Office of Government Commerce
- Language: English
- Year: 2007
- Author: Office of Government Commerce
- Language: English
- Year: 2007