1. Allen, I. E. & Seaman, J. (2015). Grade level: Tracking online education in the United States. Babson Survey Research Group and Quahog Research Group, LLC. Retrieved from https://www.onlinelearningsurvey.com/reports/gradelevel.pdf
2. Allen, I. E., Seaman, J., Poulin, R. & Straut, T. T. (2016). Online report card – tracking online education students in the United States. Babson Survey Research Group, 1–57. Retrieved from http://www.onlinelearningsurvey.com/reports/onlinereportcard.pdf
3. American Association of Community Colleges – AACC. (2020). Fast facts. Retrieved from https://www.aacc.nche.edu/research-trends/fast-facts/
4. Self-Esteem, Locus of Control, College Adjustment, and GPA Among First- and Continuing-Generation Students: A Moderator Model of Generational Status
5. Retention in Online Courses