George, L. K., Blazer, D. G., Hughes, D., Swartz, M., & Boyer, J. (1991). Generalized Anxiety Disorder. In L. N. Robins & D. A. Regier (Eds.), Psychiatric Disorders in America. New York: Free Press.

George, L. K., D. G. Blazer, D. Hughes, M. Swartz, and J. Boyer. “Generalized Anxiety Disorder.” In Psychiatric Disorders in America, edited by L. N. Robins and D. A. Regier. New York: Free Press, 1991.

George LK, Blazer DG, Hughes D, Swartz M, Boyer J. Generalized Anxiety Disorder. In: Robins LN, Regier DA, editors. Psychiatric Disorders in America. New York: Free Press; 1991.

George, L. K., et al. “Generalized Anxiety Disorder.” Psychiatric Disorders in America, edited by L. N. Robins and D. A. Regier, Free Press, 1991.

George LK, Blazer DG, Hughes D, Swartz M, Boyer J. Generalized Anxiety Disorder. In: Robins LN, Regier DA, editors. Psychiatric Disorders in America. New York: Free Press; 1991.