Discovery Girls Inc. · HarperCollins
| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Friendship Hardship | Paperback | 978-1-934766-00-2 | 2007 |
| Whisper | " | 978-0-06-179927-3 | 2012 |
| Whisper | Hardcover | 978-0-06-179925-9 | 2010 |
| Whisper | Library Binding | 978-0-06-179926-6 | 2010 |