The link in source 2 appears to be broken:
2National Sleep Foundation. (2011, March 7). Annual Sleep in America Poll Exploring Connections with Communications Technology Use and Sleep. Retrieved August 17, 2011, from http://www.sleepfoundation.org/article/press-release/annual-sleep-america-poll- exploring-connections-communications-technology-use-.
Hmm...Let me check that out.
The link in source 2 appears to be broken:
Hmm...Let me check that out.