Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yasuda Naomichi,シ(四)からヨンへ : 4を表わす言い方の変遷,青山語文,03898393,出版社不明,2002-03,32,,124-138,https://cir.nii.ac.jp/crid/1390290699552863488,https://doi.org/10.34321/9363