Depressive Disorders uses an integrative view to explore the etiology of depression, its development, and maintenance and highlights contemporary unified psychotherapy approaches. The text includes case examples that illustrate how to use integrated and unified psychotherapy approaches to help patients with depressive disorders. Dr. Koenigsberg demonstrates how research-based approaches may be used to treat individuals with different types of depressive disorders, such as major depressive disorder, persistent depressive disorder, bipolar disorder, cyclothymia, and adjustment disorder with depression. It encourages therapists to recognize that the complex themes of the depressive disorders may be more fully realized within the context of integrated and unified psychotherapy perspectives. This text is essential for early-career and seasoned therapists, graduate students, and psychotherapy researchers who wish to explore the past and contemporary history of psychotherapy approaches in order to understand the depressive disorders.