Sukarni, E. I., D. Winarni, and Y. T. Nirmayanti. “IMPROVING TEACHERS’ PROFESSIONALISM THROUGH MATERIALS DEVELOPMENT, INFORMATION TECHNOLOGY AND CLASSROOM ACTION RESEARCH”. TEFLIN Journal, vol. 20, no. 2, Aug. 2015, pp. 212-31, doi:10.15639/teflinjournal.v20i2/212-231.