Ryukyuan languages in Japan 論文集所収 Patrick Heinrich・Masahide Ishihara ·2017-09-18 ·pp. 165-184 doi:10.4324/9781315639444-11
Politeness in Korea 論文集所収 Alan Hyun-Oak Kim ·2011-09-08 ·『Cambridge University Press eBooks』 pp. 176-207 doi:10.1017/cbo9780511977886.010