- Author: Jon Berghoff
- Language: English
- Year: 2009
- Author: Steve Savage
- Language: English
- Year: 2010
- Author: Tom Markert
- Language: English
- Year: 2009
- Author: Jack Mitchell
- Language: English
- Year: 2003
- Author: Laurie Young
- Language: English
- Year: 2013
- Author: Michael Lustig
- Language: English
- Year: 2011
- Author: Thomas J. Stanley
- Language: English
- Year: 2012