year of pub­li­ca­ti­onISBNauthor(s)title
2015978-0-9762877-0-4D Preston SmithThe Potty Trainer: The Ultimate Guide to Potty Training Your Child
  ''978-0-9762877-1-1D. Preston SmithOvercoming Bladder and Bowel Problems in Children
  ''978-0-9762877-2-8First LastMonkey Learns To Potty
2004978-0-9762877-6-6PottyMD LLCPotty MD Reward System/2005 Calendar
2006978-0-9762877-7-3D Preston Smith · First LastThe Complete Bedwetting Book: Including a Daytime Program for Nighttime Dryness