- Author: Kilcullen David
- Language: English
- Year: 2009
- Author: Kilcullen David
- Language: English
- Year: 2009
- Author: Frum David, Perle Richard Norman
- Language: English
- Year: 2003
- Author: Easterly William
- Language: English
- Year: 2006
- Author: Home Robert K., Lim Hilary
- Language: English
- Year: 2004