- Author: Ronald F. Thiemann, William C. Placher, William C Placher
- Language: English
- Year: 1998
- Author: William C. Placher, William C Placher
- Language: English
- Year: 2003
- Author: Hans W. Frei (editor), George Hunsinger (editor), William C. Placher (editor)
- Language: English
- Year: 2002
- Author: William C. Placher
- Language: English
- Year: 2004
- Author: Hans W. Frei George Hunsinger William C. Placher
- Language: English
- Year: 1993