- Author: Rickards James
- Language: English
- Year: 2014
- Author: Olen Helaine
- Language: English
- Year: 2013
- Author: Brogan Chris, Smith Julien
- Language: English
- Year: 2012
- Author: Godin Seth
- Language: English
- Year: 2010
- Author: Carl Richards
- Language: English
- Year: 2012
- Author: Catherine S. McBreen, George H. Walper
- Language: English
- Year: 2007
- Author: Michael S. Malone
- Language: English
- Year: 2007
- Author: Todd Skinner
- Language: English
- Year: 2003
- Author: Randall Lane
- Language: English
- Year: 2014