Bozkurt, A., Akgun-Ozbek, E., Yilmazel, S., Erdogdu, E., Ucar, H., Guler, E., Sezgin, S., Karadeniz, A., Sen-Ersoy, N., Goksel-Canbek, N., Dincer, G. D., Ari, S. and Aydin, C. H. (2015) “Trends in distance education research: A content analysis of journals 2009-2013”, The International Review of Research in Open and Distributed Learning, 16(1). doi: 10.19173/irrodl.v16i1.1953.