How to Talk So Kids Will Listen and Listen So Kids Will Talk, by Adele Faber and Elaine Mazlish
Between Parent and Child, by Dr. Haim G. Ginott
Siblings Without Rivalry, by Adele Faber and Elaine Mazlish
Understanding Your Child's Temperament, by William B. Casey, M.D.
Raising Your Spirited Child, by Mary Sheedy Kurcinka
Children and Grief: Big Issues for Little Hearts, by Johnette Hartnett
The Worried Child, by Paul Foxman
Book Series from the Gesell Institute that deals with developmental stages to help parents better understand their children:
Your Five Year Old: Sunny and Serene
Your Six Year Old: Loving and Defiant
Your Seven Year Old: Life in a Minor Key