- Author: M.W. Roberts J.M. Thomas
- Language: English
- Year: 1980
- Author: Spencer C. Tucker Priscilla Mary Roberts
- Language: English
- Year: 2008
- Author: James R. Roberts Jerris Hedges
- Language: English
- Year: 2004
- Author: Eric G. Derouane Stanley M. Roberts
- Language: English
- Year: 2007
- Author: Valentin Fuster R. Wayne Alexander Robert A. O'Rourke Robert Roberts Spencer B. King Eric N. Prystowsky Ira Nash
- Language: English
- Year: 2004
- Author: Nick Van Bruggen Timothy P.L. Roberts
- Language: English
- Year: 2002
- Author: A. P. Roberts
- Language: English
- Year: 2003
- Author: John H. Byrne James L. Roberts
- Language: English
- Year: 2003
- Author: Eric G. Derouane Stanley M. Roberts
- Language: English
- Year: 2007