Durland, Logan. “Telephone-Based, Clinician-Guided Self-Help Cognitive Behavioral Therapy for Depression in Parkinson’s Disease (dPD): The Responder Cases of "Alice" and "Carl," and the Nonresponder Cases of "Ethan" and ‘Gary’”. Pragmatic Case Studies in Psychotherapy 16, no. 1 (July 26, 2020): 1–103. Accessed December 11, 2024. https://pcsp.nationalregister.org/index.php/pcsp/article/view/2068.