1. Benson, P., & Lor, W. (1999). Conceptions of language and language learning. System, 27(4), 459–472.
2. Bond, F. “Japanese WordNet.”,
http://compling.hss.ntu.edu.sg/wnja/index.ja.html
(Last referred: May 19, 2018)
3. Chen, N. S., & Hsieh, S. W. (2008). Effects of short-term memory and content representation type on mobile language learning. Language Learning Technology, 12(3), 93–113.
4. Hasegawa, T., Koshino, M., & Ban, H. (2015). An English vocabulary learning support system for the learner’s sustainable motivation. SpringerPlus, 4(1), 99.
5. Johns, T. (2010). Should you be persuaded - two samples of data-driven learning materials. ELR Journal, 4, 1–16.