1. Tarkin , L. (2011). Sleep Deprivation: The Surprising Causes and Solutions. Retrieved from http://www.cbsnews.com/8301-505125_162-48440287/sleep-deprivation-the-surprising-causes-and-solutions/

2. Van den Bulck, J. (2007). Adolescent Use of Mobile Phones for Calling and for Sending Text Messages After Lights Out: Results from a Prospective Cohort Study with a One-Year Follow-Up. Sleep, 30 (9), 1220–1223. Retrieved from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1978406/

3. Gardner, Amanda. “Too Little Sleep May Fuel Insulin Resistance .” CNN Health . Health.com, 10-16-12. Web. 03-19-13. <http://www.cnn.com/2012/10/15/health/sleep-insulin-resistance>.