| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Monster for a day: Or, The monster in Gregory's pajamas | Hardcover | 978-0-525-69002-3 (0-525-69002-6) | 1979 |
| Monster for a day: Or, The monster in Gregory's pajamas | 978-0-525-69003-0 (0-525-69003-4) | 1979 |