| title | ISBN-13 | year of publication |
|---|---|---|
| Playskool Guide to Potty Training | 978-1-4022-1115-7 | 2007 |
| The Entitlement-Free Child: Raising Confident and Responsible Kids in a "Me, Mine, Now!" Culture | 978-1-4022-1510-0 | 2009 |
| The Playskool Guide to Potty Training: The Best Strategies, Essential Information and Practical Advice for Your Toddler's Potty Success | 978-1-4022-1187-4 | 2008 |
| The Potty Training Answer Book: Practical Answers to the Top 200 Questions Parents Ask | 978-1-4022-0921-5 | 2007 |