1. The Alliance for Counselling & Psychotherapy [United Kingdom]. (2023 April). Person-centred therapists call on ScoPEd partners to offer PSA-backed membership home for those opposed to framework . https://allianceblogs.wordpress.com
2. Diagnostic and Statistical Manual of Mental Disorders
3. Humanistic psychotherapy research 1990–2015: From methodological innovation to evidence-supported treatment outcomes and beyond
4. Carl Rogers' Helping System: Journey and Substance
5. Beck, A. T., Rush, A. J., Shaw, B. F., & Emery, G. (1979). Cognitive therapy of depression. The Guildford Press.