著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) SATO Akihiko,"The Most Difficult Phonemes to Pronounce for English-Speaking Infants, Focusing on the Dental Fricative",拓殖大学語学研究 = Takushoku language studies,13488384,東京 : 拓殖大学言語文化研究所,2012-03,,126,67-75,https://cir.nii.ac.jp/crid/1520009409114732672,