1. Allen, I. E., Seaman, J., Poulin, R., & Straut, T. T. (2016). Online report card: Tracking online education in the United States. Babson Park: Babson Survey Research Group. Retrieved from
http://onlinelearningsurvey.com/reports/onlinereportcard.pdf
.
2. DeLacey, B. J., & Leonard, D. A. (2002). Case steudy on technology and distance in education at the Harvard Business School. Educational Technology and Society, 5(2), 13–28.
3. Donnelly, R. (2010). Harmonizing technology with interaction in blended problem-based learning. Computers and Education, 54(2), 350–359.
4. Fallah, M., & UBell, R. (2000). Blind scores in a graduate test: Conventional compared with web-based outcomes. Asynchronous Learning Networks Magazine, 4. Retrieved from
http://sloanconsortium.org/publications/magazine/v4n2/fallah.asp
.
5. Garrison, D. R., & Cleveland-Innes, M. (2004). Critical factors in student satisfaction andsuccess: Facilitating student role adjustment in online communities of inquiry. In J. Bourne & J. C. Moore (Eds.), Elements of quality online education: Into the mainstream, Vol. 5 in the Sloan-C Series (pp. 47–58). Needham: The Sloan.