1. Amazon Web Services (AWS) – Cloud Computing Services. 2017. Amazon Web Services. Inc.
https://aws.amazon.com/
.
2. An Overview of VirtualBox 2. 2008. An Overview of VirtualBox 2 – Virtuatopia. March 4.
http://www.virtuatopia.com/index.php/An_Overview_of_VirtualBox_2
. Accessed 1 Oct 2017.
3. Barrass Hugh, Christian Berard, Stephen Berard, Mark Bramfitt, Tahir Cader, Henry Coles, Jud Cooley, Tommy Darby, Jamie Froedge Emerson, Nick Gruendler, Jon Haas, Eric Jewitt, Christine Long, Bob MacArthur, Phil Morris, Zeydy Ortiz, John Pflueger, Andy Rawson, Jim Simonelli, Harkeeret Singh, Roger Tipley, Robert Tozer, Gary Verdun, John Wallerich, and Randall Wofford. 2012. PUE
TM
: A Comprehensive Examination of the Metric. The Green Grid.
https://www.thegreengrid.org/
.
4. Beckett, Helen. 2017. How Green IT Delivers Big Energy Savings. ComputerWeekly.Com.
http://www.computerweekly.com/feature/How-green-IT-delivers-big-energy-savings
.
5. Carlowicz, Michael. 2010. World of Change: Global Temperatures: Feature Articles. Earth Observatory, December 9.
http://earthobservatory.nasa.gov/Features/WorldOfChange/decadaltemp.php
.