Citation
- https://sites.google.com/a/danteacademy.ca/computers-and-society-6/environmental-stewardship-and-sustainability
- http://en.wikipedia.org/wiki/Operating_system
- http://en.wikipedia.org/wiki/Software
- http://www.webopedia.com/TERM/H/HTML.html
- http://www.w3schools.com/tags/tag_comment.asp
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