Citing the book version: All of these efforts were directed toward the goal of enhancing the clinical usefulness of DSM-5 as a guide in the diagnosis of mental disorders.1 References: 1. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders. 5th ed. Washington D.C.: 2013. Citing the database version: The Diagnostic and Statistical Manual of Mental Disorders is the most widely accepted nomenclature used by clinicians and researchers for the classification of mental disorders.1 References: 1. American Psychiatric Association. Diagnostic and Statistical Manual of Mental Disorders. 5th ed. Washington D.C.: 2013. http://dx.doi.org/10.1176/appi.books.9780890425596.Introduction. Accessed November 1, 2018.