- Author: Paul D. Houston Alan M. Blankstein Robert W. Cole
- Language: English
- Year: 2007
- Author: D. Hugh Whittaker Robert E. Cole
- Language: English
- Year: 2006
- Author: Robert L. Cole
- Language: English
- Year: 2000
- Author: Robert G. Cole Ravi Ramaswamy
- Language: English
- Year: 1999