- Author: Wiedemer Robert A., Wiedemer John David, Spitzer Cindy S
- Language: English
- Year: 2009
- Author: David Wiedemer, Robert A. Wiedemer, Cindy S. Spitzer
- Language: English
- Year: 2012
- Author: Wiedemer Robert, Risi David, Erlenbeck Sean
- Language: English
- Year: 2015
- Author: David Wiedemer Robert A. Wiedemer Cindy S. Spitzer
- Language: English
- Year: 2012
- Author: David Wiedemer Robert A. Wiedemer Cindy S. Spitzer
- Language: English
- Year: 2011
- Author: David Wiedemer Robert A. Wiedemer Cindy S. Spitzer
- Language: English
- Year: 2011
- Author: David Wiedemer Robert Wiedemer Cindy Spitzer Eric Janszen
- Language: English
- Year: 2006
- Author: David Wiedemer Robert Wiedemer Cindy Spitzer
- Language: English
- Year: 2009