Check out these resources
Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-V) 2013
Freeing Your Child From Negative Thinking: Powerful, Practical Strategies to Build Lifetime of Resilience, Flexibility, and Happiness, By Tamar Chansky
How to Talk So your Kids will Listen & How to Listen so your Kids Will Talk, by Adele Faber and Elaine Mazlish
Helping Your Child with Extreme Picky Eating: A Step-by-Step Guide for Overcoming Selective Eating, Food Aversion, and Feeding Disorders, By Katja Rowell MD
Freeing Your Child From Negative Thinking: Powerful, Practical Strategies to Build Lifetime of Resilience, Flexibility, and Happiness, By Tamar Chansky
How to Talk So your Kids will Listen & How to Listen so your Kids Will Talk, by Adele Faber and Elaine Mazlish
Helping Your Child with Extreme Picky Eating: A Step-by-Step Guide for Overcoming Selective Eating, Food Aversion, and Feeding Disorders, By Katja Rowell MD