| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Supplement to The Silence Within: School Forms for Selective Mutism | 978-0-615-12719-4 (0-615-12719-3) | 2004 |
| The Silence Within: A Teacher/Parent Guide to Working with Selectively Mute and Shy Children | 978-0-615-12151-2 (0-615-12151-9) | 1999 |