Colli, Antonello. “Returning to the Roots. A Comment on the Paper Alliance in Common Factor Land: A View through the Research Lens”. Research in Psychotherapy: Psychopathology, Process and Outcome 14, no. 2 (December 28, 2011): 4–11. Accessed March 28, 2024. https://www.researchinpsychotherapy.org/rpsy/article/view/71.