| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| The Complete Bedwetting Book: Including a Daytime Program for Nighttime Dryness | 978-0-9762877-7-3 (0-9762877-7-3) | 2006 | First Last |
| The Potty Trainer: The Ultimate Guide to Potty Training Your Child | 978-0-9762877-0-4 (0-9762877-0-6) | 2015 | |
D. M. · D.M.D. · D. P. · D. Preston · D. Preston Smith · D S · D. Smith · P.M. · P S · P. Smith · S M · Smith M