- Author: John A. Walker
- Language: English
- Year: 2002
- Author: Deborah Walker-Morrison
- Language: English
- Year: 2019
- Author: Stephen Walker
- Language: English
- Year: 2009
- Author: Paul E Walker
- Language: English
- Year: 2002
- Author: Gianluigi Palombella, Neil Walker (editors)
- Language: English
- Year: 2009
- Author: Neil Walker, Jo Shaw, Stephen Tierney (editors)
- Language: English
- Year: 2011
- Author: Henry John Walker (editor)
- Language: English
- Year: 2015
- Author: Paul Beaumont, Neil Walker (editors)
- Language: English
- Year: 1999
- Author: Karen Bickerstaff, Gordon Walker, Harriet Bulkeley (editors)
- Language: English
- Year: 2013
- Author: Stephen Walker
- Language: English
- Year: 2013