- Author: Scott Roberts Milton Todd Chris Farmer Robert Shimonski
- Language: English
- Year: 2002
- Author: Kenneth B. Roberts
- Language: English
- Year: 2000
- Author: James R. Roberts Jerris R. Hedges
- Language: English
- Year: 1985
- Author: Roberts and Hedges
- Language: English
- Author: Cleveland P. Hickman Roberts Larson
- Language: English
- Year: 2000
- Author: Jan Walter Michael J. Tobler Paul Snaith Andrei Kossoroukov Scott Roberts Jan Walter Waite Group
- Language: English
- Year: 1999
- Author: Spencer C. Tucker Priscilla Mary Roberts
- Language: English
- Year: 2005
- Author: A. P. Roberts
- Language: English
- Year: 2003
- Author: Fred S. Roberts
- Language: English
- Year: 1987