Commonwealth of Pennsylvania State Board of Education. (2012, May). Report of the College Textbook Policies Advisory Committee. https://www.stateboard.education.pa.gov/Documents/Research%20Reports%20and%20Studies/Textbook%20Affordability%20Report%20FINAL.pdf
Jaggers, S.S., Rivera, M.D., & Akani, B. (2019, March). College textbook affordability: Landscape, evidence, and policy directions. https://files.eric.ed.gov/fulltext/ED598412.pdf
Murphy, J.A., & Shelley, A. (2020) Textbook affordability in the time of COVID-19, Serials Review, 46(3), 232-237, https://doi.org/10.1080/00987913.2020.1806656
Straumshine, C. (2015, August 4). Triaging textbook costs. Inside Higher Ed. https://www.insidehighered.com/news/2015/08/04/era-400-college-textbook-affordability-initiatives-take-utilitarian-approach
Infographic by Applied Educational Systems, Inc.