1. Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR)
2. A brief screen for panic disorder
3. Barlow, D.H. (2002). Anxiety and its disorders (2nd ed.). New York, NY: Guilford Press.
4. Barlow, D.H. (Ed.). (1993). Clinical handbook of psychological disorders (3rd ed.). New York, NY: Guilford Press.
5. Beck, A.T. & Steer, R.A. (1993). Beck anxiety inventory manual. San Antonio, TX: Psychological Association.