6. Bibliography

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Jammin. (2011, October 20). The bad effects of sleeping late. Retrieved from 
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Jessica, J. (2007, June 15). Sleepless in singapore. Retrieved from 
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Lester, K., & Eisen, T. (2009, November 30). Too much time online hurts your grades. 
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Gaudin, S. (2011, March 07). Can't sleep? blame your computer, cell phone. Retrieved from http://www.computerworld.com/s/article/9213647/Can_t_sleep_Blame_your_computer_cell_phone

Christian, N. (2010, September 01). Less Than 5 Hours of Sleep Linked to Higher Mental Illness Risk. Retrieved from http://www.medicalnewstoday.com/articles/199642.php

National Sleep Foundation. (2011, Unknown). Teens and Sleep. Retrieved from http://www.sleepfoundation.org/article/sleep-topics/teens-and-sleep