| title | media type | ISBN-13 | year of publication | |
|---|---|---|---|---|
| Empress of the World | Library Binding | 978-1-4395-5146-2 | 2008 | |
| Empress of the World | Paperback | 978-0-14-250059-0 | 2007 | |
| Empress of the World | Hardcover | 978-0-670-89688-2 | 2001 | |
| Sommerküsse | Taschenbuch | 978-3-570-30107-4 | 2004 | |
| The Rules for Hearts | Hardcover | 978-0-670-05906-5 | 2007 | |
| The Rules for Hearts: A Family Drama | Paperback | 978-0-14-241237-4 | 2009 |
Regina Sara Ryan · Regina Sara Ryan RN · S R · S. Ryan · Sara Agnes Ryan · Sara Kate Gillingham-Ryan
Bertelsmann · Paw Prints · Penguin · Viking