Stanley, M. A., Beck, J., G., Novy, D. M., Averill, P. M., Swann, A. C., Diefenbach, G. J., & Hopko, D. R. (2003). Cognitive-behavioral treatment of late-life generalized anxiety disorder. Journal of Consulting and Clinical Psychology, 71, 309-319. doi: 10.1037/0022-006X.71.2.309

Stanley, M. A., Beck, J., G., Novy, D. M., Averill, P. M., Swann, A. C., Diefenbach, G. J., & Hopko, D. R. (2003). Cognitive-behavioral treatment of late-life generalized anxiety disorder. Journal of Consulting and Clinical Psychology, 71, 309-319. doi: 10.1037/0022-006X.71.2.309