[i] http://www.window.state.tx.us/comptrol/wwstand/wws0512ed/
[ii] http://tinyurl.com/23fxq9f
[iii] http://www.eia.doe.gov/cneaf/electricity/esr/table5.html, http://www.garlandpower-light.org/aboutservicerate.html
[iv] http://www.scribd.com/full/36173787?access_key=key-zwjiku03j7fba4j83i5
[v] http://www.scribd.com/doc/36173939
[vi] http://www.bls.gov/oes/current/oes333051.htm#st
[vii] http://www.dell.com/us/p/inspiron-desktops?~ck=anav#facets=130686~0~4569320,51795~0~812536,51800~0~4308952,135390~0~5280006&p=1
[viii] http://www.bls.gov/oes/current/oes332011.htm#st
[ix] http://www.dallasnews.com/sharedcontent/dws/dn/education/stories/DN-textbooks_04met.ART.State.Edition2.4bc7447.html