1. Allen, I., & Seamann, J. (2013). Ten year of online education in the United States, published by Sloan Consortium
2. Belleflamme, P. & Jacqmin, J. (2014). An economic appraisal of MOOC platforms: Business models and impacts on higher education. Retrieved January 6, 2015, from http://dx.doi.org/10.2139/ssrn.2537270 .
3. Bernhard, M. P., & Sabate, I. (2015). The founders: The evolution of edX at Harvard and MIT. Retrieved September 3, 2015, from http://www.thecrimson.com/article/2015/5/28/the-founders/ .
4. Billington, P., & Fronmueller, M. (2013). MOOCs and the future of higher education. Journal of Higher Education Theory and Practice, 13(3), 36–43.
5. Boston Business Journal. (2014). Innovation All-Stars: edX. Retrieved January 9, 2015, from http://www.bizjournals.com/boston/print-edition/2014/11/21/innovation-all-stars-edx.html?page=all .