- Author: Carla B. Johnston
- Language: English
- Year: 2000
- Author: Michael P. McCauley B. Lee Artz DeeDee Halleck Paul E Peterson
- Language: English
- Year: 2002
- Author: Donna L. Halper Donald Fishman
- Language: English
- Year: 2001
- Author: Gail Johnson Michael C Keith
- Language: English
- Year: 2001