References
Institute of Electric and Electronic Engineers. Retrieved January 28, 2008 http://www.ieeeusa.org/about/activities.asp
GE. Retrieved January 28, 2008. http://www.ge.com/company/businesses/factsheets/grc.html
U.S. Department of Labor. Occupational Handbook. Retrieved January 28, 2008. http://www.bls.gov/oco/ocos027.htm#earnings