- Author: Webb James
- Language: English
- Year: 2008
- Author: Aaron David Miller
- Language: English
- Year: 2014
- Author: Aaron David Miller
- Language: English
- Year: 2014
- Author: Nord Philip G
- Language: English
- Year: 2010
- Author: Covin David
- Language: English
- Year: 2009
- Author: Romano Sergio
- Language: Italian
- Year: 1996