Marmarosh, C. L., S. Sandage, N. Wade, L. E. Captari, and S. Crabtree. “New Horizons in Group Psychotherapy Research and Practice from Third Wave Positive Psychology: A Practice-Friendly Review”. Research in Psychotherapy: Psychopathology, Process and Outcome, vol. 25, no. 3, Nov. 2022, doi:10.4081/ripppo.2022.643.