| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Only Opal: The Diary of a Young Girl | 978-0-698-11564-4 | 1997 | Jane Boulton |
| Opal | 978-0-02-976630-9 | 1976 | " |
| Opal. Diario di un cuore sensibile | 978-88-451-4091-4 | 2007 | |
| Opal: The Journal of an Understanding Heart | 978-0-517-88516-1 | 1995 | |
| Opal, the Journal of an Understanding Heart | 978-0-935382-52-5 | 1984 | |
| The Diary of Opal Whiteley | 978-0-914101-02-4 | 1997 | |
Crown Publishers · Fabbri · Macmillan · Puffin Books · September Productions Inc · Tioga Pub Co