- Author: Phyllis Dutwin, Richard Ku
- Language: English
- Year: 2016
- Author: Richard Ku
- Language: English
- Year: 2016
- Author: Phyllis Dutwin, Richard Ku
- Language: English
- Year: 2005
- Author: Richard Ku Howard Dodge
- Language: English
- Year: 2012
- Author: Rudolf Grünig, Richard Kühn
- Language: German
- Year: 2006
- Author: Richard Ku
- Language: English
- Year: 2007