- Author: West Pam, Perkins Christopher Henry
- Language: English
- Year: 2008
- Author: Richard J. Plant Christopher Henry Perkins
- Language: English
- Year: 2007
- Author: Richard Plant
- Language: English
- Year: 2006
- Author: Chris Henry Perkins
- Language: English
- Year: 2006
- Author: Richard Plant
- Language: English
- Year: 2006
- Author: Richard J. Plant
- Language: English
- Year: 2007
- Author: Richard Plant
- Language: English
- Year: 2006
- Author: Richard Plant
- Language: English
- Year: 2005
- Author: Richard J. Plant Christopher Henry Perkins
- Language: English
- Year: 2007