- Author: Kevin Harrison, Tony Boyd
- Language: English
- Year: 2018
- Author: Kevin Harrison, Tony Boyd
- Language: English
- Year: 2006
- Author: Kevin Harrison & Tony Boyd
- Language: English
- Year: 2003
- Author: Kevin Harrison (Author) Tony Boyd (Author)
- Language: English
- Year: 2003
- Author: Kevin Harrison Tony Boyd
- Language: English
- Year: 2006