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CBS NEWS. (2011, September 29). Protest Over Cost Of Textbooks Staged On Cal Campus. CBS San Francisco. Retrieved December 6, 2013, from http://sanfrancisco.cbslocal.com/2011/09/29/protest-over-cost-of-textbooks-staged-on-cal-campus/
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Student PIRGs. (2013). Make Textbooks Affordable. Campaigns. Retrieved December 6, 2013, from http://www.studentpirgs.org/campaigns/sp/make-textbooks-affordable?page=3
The Siskiyou the Voice of SOU students. (2011, October 14). National Protest Against Textbook Prices Comes to SOU. About the Sisjiyou. Retrieved December 6, 2013, from http://siskiyou.sou.edu/2011/10/14/national-protest-against-textbook-prices-comes-to-sou/
United States, ERIC. (2008). ERIC – Strategies for Reducing Text Book Costs, Board of Governors, State University System of Florida, 2008. Retrieved December 9, 2013, from http://eric.ed.gov/?id=ED504127
