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- Cut Your Electricity Costs With An Energy Monitor. The Greenest Dollar. March 11, 2009.http://www.thegreenestdollar.com/2009/03/cut-your-electricity-costs-with-an-energy-monitor/
- Energy Monitors. Consumer Reports. March 2009.http://www.consumerreports.org/cro/magazine-archive/march-2009/appliances/energy-monitors/overview/energy-monitors-ov.htm?resultPageIndex=1&resultIndex=1&searchTerm=kill-a-watt
- Kill A Watt. P3 International.http://www.p3international.com/products/special/P4400/P4400-CE.html
- Kill A Watt PS. P3 International.http://www.p3international.com/products/consumer/p4320.html
- Lower Your Monthly Energy Bill and Save Money: Kill A Watt. Smart Home.http://www.smarthome.com/9034/Kill-A-Watt-P4400/p.aspx
- Monitor and Save Money and Energy: Kill A Watt EZ. SmartHome.http://www.smarthome.com/9034EZ/Kill-A-Watt-EZ/p.aspx