- Author: J. Samuel Walker
- Language: English
- Year: 2005
- Author: Greg Walker
- Language: English
- Year: 2006
- Author: Pam Walker Elaine Wood
- Language: English
- Year: 2005
- Author: Pam Walker Elaine Wood
- Language: English
- Year: 2005
- Author: N. Edward Walker
- Language: English
- Year: 1998
- Author: Debra Walker King
- Language: English
- Year: 2000
- Author: Filip Mussen Sam Salek Stuart Walker
- Language: English
- Year: 2010
- Author: Linda Papadopoulos Carl Walker
- Language: English
- Year: 2003
- Author: Carolyn Walker.
- Language: English
- Author: Dr. N.W. Walker D.Sc. Dr. Norman W. Walker
- Language: English
- Year: 1978