Walsh, J. K., Coulouvrat, C., Hajak, G., Lakoma, M. D., Petukhova, M., Roth, T., . . . Kessler, R. C. (2011). Nighttime Insomnia Symptoms and Perceived Health in the America Insomnia Survey (AIS). Associated Professional Sleep Societies, LLC.
استشهاد بنمط شيكاغوWalsh, James K., et al. Nighttime Insomnia Symptoms and Perceived Health in the America Insomnia Survey (AIS). Associated Professional Sleep Societies, LLC, 2011.
MLA استشهادWalsh, James K., et al. Nighttime Insomnia Symptoms and Perceived Health in the America Insomnia Survey (AIS). Associated Professional Sleep Societies, LLC, 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.