- Author: Robert B. Townsend
- Language: English
- Year: 2013
- Author: Robert M. Townsend, Rob Jordan, Sombat Sakunthasathien
- Language: English
- Year: 2013
- Author: Paul E. Weston, Robert N. Townsend
- Language: English
- Year: 2008
- Author: Robert B. Townsend
- Language: English
- Year: 2013
- Author: Robert B. Townsend
- Language: English
- Year: 2013
- Author: Robert J. Townsend Stephanie Pakrul (auth.)
- Language: English
- Year: 2010
- Author: Robert Frederick Townsend
- Language: English
- Year: 1999