
- Author: Jack W. Plunkett
- Language: English
- Year: 2004

- Author: Jack W. Plunkett
- Language: English
- Year: 2001

- Author: Jack W. Plunkett
- Language: English
- Year: 2000

- Author: Jack W. Plunkett
- Language: English
- Year: 2003

- Author: Jack W. Plunkett
- Language: English
- Year: 2003

- Author: Jack W. Plunkett Plunkett Research Ltd.
- Language: English
- Year: 2001

- Author: Jack W. Plunkett
- Language: English
- Year: 2002

- Author: Jack W. Plunkett Plunkett Research Ltd.
- Language: English
- Year: 2001