- Author: Brian Abbs etc. Ingrid Freebairn Chris Barker
- Language: English
- Year: 1998
- Author: Charles Edge Chris Barker Ehren Schwiebert
- Language: English
- Year: 2010
- Author: Chris Barker
- Language: English
- Year: 2002
- Author: Dr Chris Barker
- Language: English
- Year: 2002
- Author: Dr Chris Barker
- Language: English
- Year: 2004
- Author: Charles Edge Chris Barker Ehren Schwiebert
- Language: English
- Year: 2010
- Author: Dr Chris Barker
- Language: English
- Year: 2004
- Author: Dr Chris Barker
- Language: English
- Year: 2004
- Author: Jonathan Swift Salvador Alvarez Patuel Chris Barker Dan Wahlin
- Language: English
- Year: 2009
