- Author: C. Donald Ahrens Robert Henson
- Language: English
- Year: 2022
- Author: C. Donald Ahrens Robert Henson
- Language: English
- Year: 2018
- Author: C Donald Ahrens
- Language: English
- Year: 2017
- Author: C. Donald Ahrens Robert Henson
- Language: English
- Year: 2018
- Author: C. Donald Ahrens, Peter L. Jackson, Christine E.J. Jackson
- Language: English
- Year: 2012
- Author: C. Donald Ahrens
- Language: English
- Year: 2012
- Author: C. Donald Ahrens
- Language: English
- Year: 2011
- Author: C. Donald Ahrens
- Language: English
- Year: 2008
- Author: C. Donald Ahrens Perry J. Samson
- Language: English
- Year: 2010