- Author: Mark Erickson
- Language: English
- Year: 2013
- Author: Ann Gray Jan Campbell Mark Erickson Stuart Hanson Helen Wood
- Language: English
- Year: 2007
- Author: Charles Turner, Mark Erickson
- Language: English
- Year: 2010
- Author: Mark Erickson
- Language: English
- Year: 2005
- Author: Mark Erickson
- Language: English
- Year: 2005