Karyati, A., and P. W. Hapsari. “The Use of an Open-Ended Learning Model in Kanji Courses to Improve the Ability to Master Kanji Sub-Characters”. Japanese Research on Linguistics, Literature, and Culture, vol. 8, no. 2, May 2026, pp. 140-55, doi:10.33633/jr.v8i2.12672.