This guide in an incredibly helpful volume, full of understanding, strategies and case examples. It is written by both parents and authors. It contains a handy list of resources too. This book is a must-read for anyone who knows a child with Pathological Demand Avoidance (PDA).
You can get a copy here
Pathological Demand Avoidance Syndrome (PDA) is a developmental disorder that is being increasingly recognised as part of the autism spectrum. The main characteristic is a continued resistance to the ordinary demands of life through strategies of social manipulation, which originates from an anxiety-driven need to be in control.