- Author: Spears Richard A
- Language: English
- Year: 2000
- Author: Axelrod Alan
- Language: English
- Year: 2012
- Author: Spears Richard A
- Language: English
- Year: 2000
- Author: Kipfer Barbara Ann, Chapman Robert L
- Language: English
- Year: 2007
- Author: Axelrod Alan
- Language: English
- Year: 2013