- Author: Bill W. Tillery, Eldon D. Enger, Frederick C. Ross
- Language: English
- Year: 2018
- Author: Bill W. Tillery Eldon D. Enger Frederick C. Ross
- Language: English
- Year: 2012
- Author: Eldon D. Enger Frederick C. Ross David B. Bailey
- Language: English
- Year: 2011
- Author: Eldon Enger Frederick C Ross
- Language: English
- Year: 2002
- Author: Eldon Enger Frederick C Ross Frederick Ross
- Language: English
- Year: 2003
- Author: Eldon D. Enger, Frederick C. Ross
- Language: English
- Year: 2002