L a · R. A. · R. L · Ruth Ault
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Children's Cognitive Development | 978-0-19-503183-6 (0-19-503183-0) | 1983 |
| Children's Cognitive Development: Piaget's Theory and the Process Approach | 978-0-19-503184-3 (0-19-503184-9) | 1983 |
| Children's Cognitive Development: Piaget's Theory and the Process Approach | 978-0-19-502093-9 (0-19-502093-6) | 1977 |