- Author: James Duncan Nuala Johnson Richard Schein
- Language: English
- Year: 2004
- Author: Michael Johnson Richard Hook
- Language: English
- Year: 1992
- Author: James Duncan Nuala Johnson Richard Schein
- Language: English
- Year: 2004
- Author: Michael Johnson Richard Hook
- Language: English
- Year: 1992
- Author: Michael Johnson Richard Hook
- Language: English
- Year: 1995
- Author: A. Mark Davies Karl J. Johnson Richard William Whitehouse A.L. Baert
- Language: English
- Year: 2005
- Author: Klaus Wolff Richard. Johnson Richard Suurmond
- Language: English
- Year: 2005
