- Author: George Hewitt
- Language: English
- Year: 2005
- Author: David Smyth
- Language: English
- Year: 2002
- Author: Robin Allan Philip Holmes Tom Lundskær-Nielsen
- Language: English
- Year: 2000
- Author: Amelia P. Hutchinson Janet Lloyd
- Language: Portuguese
- Year: 1996
- Author: Åse-Berit Strandskogen Rolf Strandskogen
- Language: English
- Year: 1994
- Author: Lewis Glinert
- Language: English
- Year: 2005
- Author: Fred Karlsson
- Language: English
- Year: 1999
- Author: Carol H. Rounds
- Language: English
- Year: 2001
- Author: Bruce Donaldson
- Language: English
- Year: 2006
- Author: Peter T. Bradley Ian MacKenzie
- Language: English
- Year: 2004