The Worry Trap is a self help workbook focused on ACT for worry and anxiety.

Finding Life Beyond Trauma is  a self help workbook  for those struggling with traumatic events in their histories.

Act in Practice  is a book for therapists focusing on case conceptualization from an Acceptance and Commitmetn Therapy perspective. It covers some of the basics of behaviora analysis and shows how to use functional analysis in the context of ACT.

The Diabetes Lifestyle Book is a book about adapting to diabetes that is informed by an ACT perspective. It is derived in part from a study with good outcomes using ACT along with education to help people better manage their diabetes.