Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ito Takayuki and 伊藤 孝行,"Book Review : SETU Sei, Humble Expressions in Modern Japanese Textbooks",國學院雑誌,02882051,國學院大學,2021-09,122,9,18-22,https://cir.nii.ac.jp/crid/1390576922113577728,https://doi.org/10.57529/00000670