- Author: Gordon Williamson
- Language: English
- Year: 2014
- Author: Gordon Williamson Ramiro Bujeiro
- Language: English
- Year: 2002
- Author: Gordon Williamson
- Language: English
- Year: 2015
- Author: Gordon Williamson Ian Palmer
- Language: English
- Year: 2010
- Author: Gordon Williamson Ian Palmer
- Language: English
- Year: 2009
- Author: Gordon Williamson Malcolm McGregor
- Language: English
- Year: 2005
- Author: Gordon Williamson Ramiro Bujeiro
- Language: English
- Year: 2003
- Author: Gordon Williamson Darko Pavlovic
- Language: English
- Year: 2003
- Author: Gordon Williamson Ramiro Bujeiro
- Language: English
- Year: 2004
- Author: Gordon Williamson Stephen Andrew
- Language: English
- Year: 2003