- Author: Mark Cade Simon Roberts
- Language: English
- Year: 2002
- Author: Philip Heller Simon Roberts
- Language: English
- Year: 2002
- Author: Philip Heller Simon Roberts
- Language: English
- Year: 2002
- Author: Richard H. Roberts
- Language: English
- Year: 2001
- Author: Roberts T. R.
- Language: English
- Year: 1978
- Author: Michael J. Rathbone Michael S. Roberts Jonathan Hadgraft
- Language: English
- Year: 2003
- Author: edited by Jane L. Hurst Robert J. Beynon S. Craig Roberts Tristram D. Wyatt.
- Language: English
- Year: 2008
- Author: Philip Roberts
- Language: English
- Year: 2003
