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"refrigeration." Compton's by Britannica. 01 Aug. 2011: n.p. SIRS Discoverer. Web. 21 Oct. 2014.
Huzhou Danuo Electrical and Mechanical Equipment Co.,Ltd. "300mm Axial Fan for Air Cooler." EC21. EC21 Inc., 1997-2014. Web. 21 Oct. 2014.
LG. "10 of the Best Air Conditioners." Homelife. News Life Media, 2014. Web. 21 Oct. 2014.
Northstar. "5 Best Red Refrigerator." Tool Box. WordPress, 14 Sept. 2013. Web. 21 Oct. 2014.
Random House Dictionary. "Air Conditioning." Dictionary.com. Dictionary.com, 2014. Web. 21 Oct. 2014.
"refrigeration." Compton's by Britannica. 01 Aug. 2011: n.p. SIRS Discoverer. Web. 21 Oct. 2014.