
- Author: Antje Kampf, Barbara L. Marshall, Alan Petersen
- Language: English
- Year: 2012

- Author: Barbara L. Marshall
- Language: English
- Year: 2013

- Author: Austin Harrington Barbara L. Marshall Hans-Peter Müller
- Language: English
- Year: 2006

- Author: Barbara L Marshall Anne Witz
- Language: English
- Year: 2004