- Author: Michael D. Dahnke, H. Michael Dreher, Rn H Michael Dreher Phd
- Language: English
- Year: 2010
- Author: Johannes Bickenbach Gernot Marx Michael Dreher Bernd Schönhofer
- Language: German
- Year: 2018
- Author: H. Michael Dreher Mary Ellen Smith Glasgow
- Language: English
- Year: 2010