R. S. · Richard E. Sotnick · Richard S.
| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Retribution | Paperback | 978-0-9557125-3-1 (0-9557125-3-X) | 2013 |
| The Coburg Conspiracy: Royal Plots and Manoeuvres | " | 978-0-9557125-1-7 (0-9557125-1-3) | 2010 |
| The Coburg Conspiracy: Royal Plots and Manoeuvres | Hardcover | 978-0-9557125-0-0 (0-9557125-0-5) | 2008 |