- Author: Charles Bradlaugh, John Watts, Anthony Collins
- Language: English
- Year: 2012
- Author: Sibley Dennis T., Snelling John, Watts Alan, Watts Mark
- Language: English
- Year: 1987
- Author: Anthony John Watts
- Language: English
- Year: 1990
- Author: Huw Pryce John Watts
- Language: English
- Year: 2007
- Author: John Watts
- Language: English
- Year: 2009