- Author: Mhinder Bhopal, Michael Hitchcock, Barbara Klein
- Language: English
- Year: 2002
- Author: Barbara Klein
- Language: English
- Year: 2017
- Author: Barbara Klein
- Language: English
- Year: 2017
- Author: Barbara Klein
- Language: English
- Year: 2015
- Author: Barbara Klein
- Language: English
- Year: 2012
- Author: Martina Kittler, Barbara Klein
- Language: German
- Year: 2016
- Author: Barbara Klein
- Language: German
- Year: 2016
- Author: Barbara Klein (auth.)
- Language: German
- Year: 1996