- Author: Samuel R. Williamson Jr
- Language: English
- Year: 1990
- Author: Günter Bischof, Ferdinand Karlhofer, Samuel R. Williamson Jr.
- Language: English
- Year: 2014
- Author: Samuel R. Williamson Jr. Steven L. Rearden (auth.)
- Language: English
- Year: 1993
- Author: Samuel R. Williamson Jr (auth.)
- Language: English
- Year: 1991