- Author: David Coggon David Barker Geoffrey Rose
- Language: English
- Year: 2003
- Author: David Barker
- Language: English
- Author: David Barker D. McGreggor
- Language: English
- Year: 1995
- Author: Michael A. Adams Michael Adams David Barker
- Language: English
- Year: 2000
- Author: Bronwyn Olliffe Brownwyn Olliffe David Barker
- Language: English
- Year: 2001
- Author: Anita Stuhmcke David Barker
- Language: English
- Year: 2001
- Author: Ian Ellis-Jones David Barker
- Language: English
- Year: 2001
- Author: David Barker
- Language: English
- Year: 2002
- Author: David Barker D. McGreggor
- Language: English
- Year: 1995