Other useful books:

"Constipation, Withholding and Your Child" 
by Anthony Cohn
Amazon.co.uk : Amazon.com

"A Boy Like You: A Story for Boys Who Soil" 
​by James Parkin
Kindle: Amazon.co.uk : Amazon.com
Print: eric.org.uk

"Scared to Poop: A Guide to Overcoming Constipation and 
Stool Withholding" by Kathleen Diehl
Amazon.co.uk : Amazon.com

"The Ins and Outs of Poop" 
by Dr Thomas R. DuHamel
Amazon.co.uk : Amazon.com

 "A Girl Like You: A Story for Girls Who Soil"
​by James Parkin
Kindle: Amazon.co.uk : Amazon.com
Print: eric.org.uk  

"Encopresis - you can beat it!: Game-changing solutions for Toilet Anxiety, Soiling, and Constipation in Children" by Dr Baruch Kushnir
Amazon.co.uk : Amazon.com