1. Andrew Carnegie Quotes. (n.d.). Retrieved from
http://www.brainyquote.com/quotes/quotes/a/andrewcarn382305.html
.
2. Anderson, D. G. (2011). Taking the “distance” out of distance education: a humorous approach to online learning. Journal of Online Learning and Teaching, 7(1), 74–81. Retrieved from
http://jolt.merlot.org/vol7no1/anderson_0311.htm?extern_usr=guest&extern_id=2&course_id=5810
.
3. Banas, J. A., Dunbar, N., Rodriguez, D., & Liu, S. J. (2011). A review of humor in educational settings: four decades of research. Communication Education, 60, 115–144.
https://doi.org/10.1080/03634523.2010.496867
.
4. Bateson, P., & Martin, P. (2013). Play, playfulness, creativity and innovation. Cambridge, UK: Cambridge University Press.
5. Bolkan, S., & Goodboy, A. K. (2015). Exploratory theoretical tests of the instructor humor–student learning link. Communication Education, 64, 45–64.
https://doi.org/10.1080/03634523.2014.978793
.