Koddebusch, Christine, and Christiane Hermann. “A Proposed Conceptualization of Therapeutic Competence: The Three Level Model”. Research in Psychotherapy: Psychopathology, Process and Outcome 21, no. 1 (April 12, 2018). Accessed April 25, 2024. https://www.researchinpsychotherapy.org/rpsy/article/view/286.