- Author: Stewart R. Clegg, Cynthia Hardy, Walter R. Nord
- Language: English
- Year: 1999
- Author: Walter R. Nord
- Language: English
- Year: 1976
- Author: Stewart Clegg, Cynthia Hardy, Thomas B. Lawrence, Walter R. Nord (editors)
- Language: English
- Year: 2006
- Author: Stewart R Clegg Cynthia Hardy Walter R. Nord
- Language: English
- Year: 1996