Start with high-confidence child & custody law books, then narrow by subgenre or adjacent topics.
Collaborative Divorce
Pauline H. Tesler, Peggy Thompson
Divorce Poison New and Updated Edition
Dr. Richard A. Warshak
Winning Custody
Deedra Hunter, M.S., L.M.H.C, Tom Monte
Fair Share Divorce for Women, Second Edition
Kathleen A. Miller
The Ties That Bind (routledge Revivals)
Carol Smart
The Great Divorce
Ilyon Woo, Suzanne Toren
Divorce After 50
Janice Green
What Your Divorce Lawyer May Not Tell You
Margery Rubin
Tug of War
Harvey Brownstone
Little Book of Restorative Justice
Howard Zehr
Little Book of Conflict Transformation
John Lederach
Pieces of Me
Lizbeth Meredith