- Author: Charles W. L. Hill
- Language: Spanish
- Year: 2010
- Author: Charles W. L. Hill, Thomas McKaig, G. Tomas M. Hult, Tim Richardson
- Language: English
- Year: 2018
- Author: Charles W. L. Hill Steven Mcshane
- Language: English
- Year: 2007
- Author: Charles W. L. Hill
- Language: English
- Year: 2011
- Author: Charles W. L. Hill
- Language: English
- Year: 2011
- Author: Charles W.L. Hill, G. Tomas M. Hult
- Language: English
- Year: 2018
- Author: Charles W.L. Hill, Melissa A. Schilling, Gareth R. Jones
- Language: English
- Year: 2016
- Author: Charles W.L. Hill
- Language: English
- Year: 2014
- Author: Charles W. L. Hill
- Language: English
- Year: 2012