The Internal Family Systems Skills Training Manual is a textbook in the field of psychology, specifically focusing on trauma-informed treatment for anxiety, depression, PTSD, and substance abuse. Authored by Richard D. Schwartz, Martha Sweezy, and Frank G. Anderson and published by Pesi in 2017, this manual provides valuable insights and techniques for addressing complex psychological issues. With a focus on social psychology and a trauma-informed approach, this book offers practical tools and strategies for professionals in the field of mental health.