1. Alroe, M. J. (2012). Strategies to increase EFL students’ mastery of the core vocabulary of English. EJRT E Journal for Researching Teachers, 5(1), 1–17.
2. Auerbach, E. R. (1993). Reexamining English only in the ESL classroom. TESOL Quarterly, 27(1), 9–32. http://doi.org/bmdp57
3. Chang, Y. Y. (2010). English-medium instruction for subject courses in tertiary education: Reactions from Taiwanese undergraduate students. Taiwan International ESP Journal, 2(1), 55–84.
4. Chinokul, S. (2012). Development of EFL teaching skills: Knowledge from methodology course to real classroom practice. Unpublished manuscript. Chulalongkorn University, Bangkok, Thailand.
5. Chun, D. M., & Plass, J. L. (1996). Effects of multimedia annotations on vocabulary acquisition. The Modern Language Journal, 80(2), 183–198. http://doi.org/c75t75