Giannone, Francesca, Cinzia Guarnaccia, Salvatore Gullo, Maria Di Blasi, Cecilia Giordano, Gianluca Lo Coco, and Gary Burlingame. “Italian Adaptation of the Group Questionnaire: Validity and Factorial Structure”. Research in Psychotherapy: Psychopathology, Process and Outcome 23, no. 2 (September 7, 2020). Accessed March 1, 2021. https://researchinpsychotherapy.org/index.php/rpsy/article/view/443.