Cornell University Library · Nabu Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Helping School Children: Suggestions for Efficient Cooperation with the Public Schools | 978-1-144-62441-3 (1-144-62441-X) | 2010 |
| Helping School Children: Suggestions for Efficient Cooperation With the Public Schools | 978-1-112-49630-1 (1-112-49630-0) | 2009 |