Family Art Therapy is designed to help the reader incorporate clinical art therapy intervention techniques into family therapy practice. Expressive modalities are often used in work with families, particularly visual art forms, and there is already considerable evidence and literature that point to a positive link between the two. This text is unique in that it draws together, for the first time in a single volume, an overview of the evolution of the theories and techniques from the major schools of classic family therapy, integrating them with practical clinical approaches from the field of art therapy.
Here's a useful book about using art interventions with families. After introducing some general theories about art therapy, the book goes on to present specific chapters about different family therapy theories, such as structural, narrative, and so on, and how art therapy can be integrated into the work.
I've put this book on the "recommended for further reading" for my students in my family therapy class.