1. Colombia University Department of Neurology. The Neurological Institute of New York, 710 West 168th Street, New York, NY 10032-3784. Copyright © 2015 Department of Neurology. https://www.columbianeurology.org/neurology/staywell/sleep-deprivation
2. The Sleep Foundation. What Causes Insomnia. https://www.sleepfoundation.org/insomnia/what-causes-insomnia . © 2020 OneCare Media, LLC
3. Roth T. (2007). Insomnia: definition, prevalence, etiology, and consequences. Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine, 3(5 Suppl), S7–S10.
4. Kalmbach, D. A., Anderson, J. R., & Drake, C. L. (2018). The impact of stress on sleep: Pathogenic sleep reactivity as a vulnerability to insomnia and circadian disorders. Journal of sleep research, 27(6), e12710. https://doi.org/10.1111/jsr.12710
5. Neckelmann, D., Mykletun, A., & Dahl, A. A. (2007). Chronic insomnia as a risk factor for developing anxiety and depression. Sleep, 30(7), 873–880. https://doi.org/10.1093/sleep/30.7.873
6. Kalmbach, D. A., Cuamatzi-Castelan, A. S., Tonnu, C. V., Tran, K. M., Anderson, J. R., Roth, T., & Drake, C. L. (2018). Hyperarousal and sleep reactivity in insomnia: current insights. Nature and science of sleep, 10, 193–201. https://doi.org/10.2147/NSS.S138823
7. Schwab, R. J. (2020, June). Insomnia: Difficulty Falling Asleep: Sleep Disorders: Manual Home Edition - Brain, Spinal Cord, and Nerve Disorders. Retrieved July 20, 2020. https://www.msdmanuals.com/home/brain,-spinal-cord,-and-nerve-disorders/sleep-disorders/insomnia-and-excessive-daytime-sleepiness-eds
8. Finan, P. H., Goodin, B. R., & Smith, M. T. (2013). The association of sleep and pain: an update and a path forward. The journal of pain : official journal of the American Pain Society, 14(12), 1539–1552. https://doi.org/10.1016/j.jpain.2013.08.007
9. Harvard Health Publishing. Are Drugstore Sleep Aids Safe. https://www.health.harvard.edu/staying-healthy/are-drugstore-sleep-aids-safe. © 2010 - 2020 Harvard University.
10. Drugstore sleep aids may bring more risks than benefits. https://www.health.harvard.edu/staying-healthy/drugstore-sleep-aids-may-bring-more-risks-than-benefits