- Author: Paul S. Kindstedt
- Language: English
- Year: 2012
- Author: Micklethwait John, Wooldridge Adrian
- Language: English
- Year: 2003
- Author: Micklethwait John, Wooldridge Adrian
- Language: English
- Year: 2003
- Author: Northrup Cynthia Clark
- Language: English
- Year: 2015
- Author: Northrup Cynthia Clark
- Language: English
- Year: 2015
- Author: Jacques Heers
- Language: French
- Year: 2014
- Author: Kindstedt Paul S
- Language: English
- Year: 2012