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) Guido Izuta,An assessment of the utterances of some English vowels spoken by Japanese students : A survey at a junior college for women in Japan,山形県立米沢女子短期大学紀要 = Bulletin of Yonezawa Women's Junior College,02880725,米沢 : 山形県立米沢女子短期大学,2013-12,,49,63-82,https://cir.nii.ac.jp/crid/1520853834556881280,