- Author: Gordon L. Rottman
- Language: English
- Year: 2005
- Author: Nic Fields
- Language: English
- Year: 2009
- Author: Gordon L. Rottman
- Language: English
- Year: 2005
- Author: Pier Paolo Battistelli
- Language: English
- Year: 2006
- Author: Gordon L. Rottman
- Language: English
- Year: 2004
- Author: Gordon L. Rottman
- Language: English
- Year: 2007
- Author: Stephen Turnbull
- Language: English
- Year: 2008
- Author: Battistelli Pier Paolo
- Language: English
- Year: 2009
- Author: Pier Paolo Battistelli
- Language: English
- Year: 2009
- Author: Pier Paolo Battistelli
- Language: English
- Year: 2006