1. Psychotherapy Process: The Missing Link: Comment on Westen, Novotny, and Thompson-Brenner (2004).
2. Heterogeneity in psychiatric diagnostic classification
3. Statistics notes: Absence of evidence is not evidence of absence
4. American Group Psychotherapy Association. (2015). Mental health program services for disaster preparedness and response. https://www.agpa.org/docs/default-source/practice-resources/agpa-resources-programs-and-services-in-response-to-traumatic-events.pdf?sfvrsn=0
5. American Psychological Association (2018). Group psychology and group psychotherapy. https://www.apa.prg/ed/graduate/specialize/group-psychology-therapy