1. Astin, A. W. (1999). Student involvement: a developmental theory for higher education. Journal of College Student Development, 40(5), 518-529.
2. Blended learning as a potentially winning combination of faceto-face and online learning: an exploratory study;Auster;Teaching Sociology,2016
3. Berger, R. (2003). An ethic of excellence: building a culture of craftsmanship with students. Portsmouth, NH: Heinemann.
4. Bersin, J. (2004). The blended learning book: best practices, proven methodologies, and lessons learned. San Francisco, USA: John Wiley & Sons, Inc.
5. Briggs, S. (2014). 21 ways to check for student understanding. Retrieved from https://www.opencolleges.edu.au/informed/features/21-ways-to-check-forstudent-understanding/