American Psychiatric Association. (1980) Diagnostic and statistical manual of mental disorders. (3rd ed.) Washington, DC: Author
2.
MyersJ. K., WeissmanM. M., TischlerG. L., HolzerC. F., LeafP. J., OrvaschelH., AnthonyJ. C., BoydJ. H., BurkeJ. D., KramerM., and StoltzmanR. (1984). Six-month prevalence of psychiatric disorders in three communities. Archives of General Psychiatry, 41, 959–967.
3.
PollardC. A., and HendersonJ. G.Jr. (1986). Prevalence of anxiety disorders in a major metropolitan community. Paper presented at the meeting of the American Psychological Association, Washington, DC