1. Allen, J. E., Seaman, J., & Garret, R. (2007). Blending in - the extent and promise of blended education in the United States. Retrieved from Online Learning Consortium:
https://secure.onlinelearningconsortium.org/publications/survey/blended06
.
2. ALS (1998). Preliminary cost methodology for distance learning. Phoenix: Arizona Learning Systems and the State Board of Directors for Community Colleges of Arizona.
3. Bart, M. (2008). Distance education - measuring the benefits and costs. Retrieved from Faculty Focus - Higher Ed teaching strategies from Magna Publications:
http://www.facultyfocus.com/articles/distance-learning/distance-education-measuring-the-benefits-and-costs/
. Accessed 1 Mar 2018.
4. Bates, A. W. (2015). Teaching in a digital age. Guidelines for designing teaching and learning for a digital age. Tony Bates Associates Ltd. Retrieved from
https://opentextbc.ca/teachinginadigitalage/
. Accessed 1 Mar 2018.
5. Bersin, J. (2004). The blended learning book: Best practices, proven methodologies, and lessons learned. San Francico: John Wiley & Sons.