Macmillan · Various small imprints
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Foundations Curriculum Guide Second Printing | 978-0-692-00116-5 (0-692-00116-6) | 2009 |
| The Core: Teaching Your Child the Foundations of Classical Education | 978-0-230-10035-0 (0-230-10035-X) | 2010 |