Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 玉岡 賀津雄 and TAMAOKA Katsuo,The causal relation between the Japanese language proficiency of 850 foreign learners and productive frequencies of lexical categories in expository text,ことばの科学,13456156,名古屋大学言語文化研究会,2020-12-25,34,,45-64,https://cir.nii.ac.jp/crid/1390572174610644992,https://doi.org/10.18999/stul.34.45