Kessler, R. C., Gruber, M., Hettema, J. M., Hwang, I., Sampson, N., & Yonkers, K. A. (2007). Comorbid Major Depression and Generalized Anxiety Disorders in the National Comorbidity Survey follow-up.

Kessler, Ronald C., Michael Gruber, John M. Hettema, Irving Hwang, Nancy Sampson, و Kimberly A. Yonkers. Comorbid Major Depression and Generalized Anxiety Disorders in the National Comorbidity Survey Follow-up. 2007.

Kessler, Ronald C., et al. Comorbid Major Depression and Generalized Anxiety Disorders in the National Comorbidity Survey Follow-up. 2007.