| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| First Steps in Mental Growth: A Series of Studies in the Psychology of Infancy | 978-1-144-63587-7 (1-144-63587-X) | 2010 |
| First Steps in Mental Growth: A Series of Studies in the Psychology of Infancy | 978-1-145-21424-8 (1-145-21424-X) | 2010 |