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) Silvia Place and Erika Hoff,Properties of Dual Language Exposure That Influence 2-Year-Olds’ Bilingual Proficiency,Child Development,0009-3920,Oxford University Press (OUP),2011-11-01,82,6,1834-1849,https://cir.nii.ac.jp/crid/1360001114166364416,https://doi.org/10.1111/j.1467-8624.2011.01660.x