- Author: Peter Roberts
- Language: English
- Year: 1994
- Author: Barbara Roberts
- Language: English
- Year: 1996
- Author: Lance W. Roberts, Rodney A. Clifton, Barry Ferguson
- Language: English
- Year: 2005
- Author: Lance W. Roberts, Barry Ferguson, Mathias Bös
- Language: English
- Year: 2013
- Author: Leah K. Hamilton (editor), Luisa Veronis (editor), Margaret Walton-Roberts (editor)
- Language: English
- Year: 2020
- Author: Nancy Roberts
- Language: English
- Year: 1997
- Author: Katherine Ann Roberts
- Language: English
- Year: 2018
- Author: Gillian Roberts
- Language: English
- Year: 2015
- Author: stephanie roberts
- Language: English
- Year: 2020
- Author: Gillian Roberts (editor)
- Language: English
- Year: 2018