- Author: O'Brien Robert A
- Language: English
- Year: 1986
- Author: O'Brien Robert R.
- Language: English
- Author: John G.D. Grieve Michael Ignatieff Mike O'Brien Robert Skidelsky
- Language: English
- Year: 2000
- Author: Michael J. O'Brien Robert C. Dunnell
- Language: English
- Year: 1998